Kanya – Isofield

How are Cleanroom socks addressed under EU GMP Annex 1?

Kanya — Wed, 09 Sep 2026 06:44:22 +0000

Cleanroom socks have moved from a local gowning preference to an explicit consideration under the revised EU GMP Annex 1. That does not make them equivalent to sterile gloves, masks or other controls used close to exposed product. It does mean that facilities supplying or manufacturing sterile medicinal products should be able to explain how footwear and socks are managed at the Grade B/C change-room boundary within the contamination control strategy (CCS).

For Quality and Procurement, the practical question is how to select a workable control that operators will use correctly, supported by objective supplier evidence and proportionate to process risk and budget.

What Annex 1 actually requires

Section 7.14 excludes outdoor clothing, including socks, from changing rooms leading directly to Grade B and Grade C areas. Personnel should instead wear facility suits and “facility socks covering the feet” before entry. Neither item should present a contamination risk to the gowning area or process.

Annex 1 defines an outcome and a gowning boundary, not a single-use format, specific polymer, sterile presentation or universal design. Nor does it require facility socks in every classified area. The site should define the control through quality risk management, the CCS and its gowning SOP.

Regulatory boundary: Cleanroom socks support contamination control at a defined change-room interface. They are not normally direct product-contact items, so their criticality should remain proportionate to the contamination route.

Material choice is an operator-control issue

Low linting is the starting point. Some economical, very lightweight nylon constructions provide limited moisture transport during prolonged wear. Over an eight-hour shift, heat and perspiration can become uncomfortable beneath cleanroom footwear. A sock that feels wet, twists or migrates encourages touching and adjustment during gowning or operation.

The raw polymer name alone is a poor predictor of performance. Fibre blend, yarn, knit architecture, fabric mass, stretch recovery and finishing influence moisture movement, linting and comfort. Nylon is not inherently unsuitable, nor is polyester automatically superior. A well-designed polyester/spandex construction can balance moisture management, fit and recovery.

Assessment should include a representative wearer trial covering the longest routine shift, normal footwear and the available size range. Evaluate heat and moisture perception, heel and calf movement, pressure points, donning ease and adjustment frequency. Comfort matters because operator behaviour is part of contamination control.

Other claims require separate scrutiny. ESD socks are relevant only where the process risk assessment requires electrostatic control. Likewise, “ISO Class 5 socks” is market shorthand: ISO 14644-1 classifies airborne cleanliness of environments, not socks. Ask what was tested, by which method, where the product was processed and what evidence supports its suitability.

Fit is more than a comfort feature

Many single-use cleanroom socks are simple tubes with no defined heel. This can reduce cost and simplify size management, but may allow fabric to bunch or rotate. A formed or hourglass heel can improve location on the foot. An elasticated top opening and a credible size range help retain the sock at the calf without excessive constriction.

These are design considerations, not proof of compliance. As one practical example, Isofield COS single-use cleanroom socks use a 95% polyester and 5% spandex blend, an hourglass heel, a mid-calf profile and three sizes. They are low linting and processed in an ISO Class 5 cleanroom, a statement about the processing environment, not a classification of the sock itself. Those features give a purchasing team specific attributes to assess, but qualification should still consider the site gowning system, packaging, supply continuity and actual wearer performance.

Single-use or reusable? The defensible answer is “it depends”

Reusable cleanroom socks can be appropriate where a controlled laundry service is established and the garment remains fit for purpose over qualified cycles. Annex 1 section 7.17 requires reusable clean-area clothing to be processed in a segregated laundry using a qualified process, with controls for damage, cross-contamination, inspection and maximum laundry and, where applicable, sterilisation cycles.

That infrastructure belongs in the environmental and financial calculation. A credible lifecycle comparison includes manufacture, service life, wash chemistry, water, energy, transport, packaging, losses and end-of-life treatment. Neither format is universally preferable without site-relevant data.

User acceptance also matters. Some operators object to pooled socks even after validated laundering and sanitisation. That perception is not itself a microbiological risk, but it can affect compliance. Dedicated wearer sets and traceable return may help, although they add service complexity.

Single-use socks avoid return logistics and provide a predictable new garment at issue, but create recurring consumption, waste, storage and stock-management requirements. Autoclavable socks may be justified within a particular sterile garment system, but Annex 1 does not make autoclavability or sterility the default requirement for facility socks.

Build the requirement into gowning proportionately

There is no universal instruction that cleanroom socks must be “step one”. The sequence depends on facility design and where outdoor clothing is removed. The SOP should define the boundary, issue and donning point, and prevent outdoor socks entering the Grade B/C change-room route. It should also address removal, reuse, laundry or waste flows, and dropped or damaged items.

Over the top, or change into? Annex 1 points to replacement

Annex 1 requires outdoor clothing, including socks, to remain outside changing rooms leading directly to Grade B and Grade C areas, and requires facility socks before entry. The most straightforward and defensible reading is therefore replacement rather than an added layer: an over-sock still carries the outdoor sock into the route the clause excludes.

An over-sock may be quicker and avoid barefoot contact with the change-room floor. Against that, it retains a particulate and microbial reservoir beneath the controlled garment, changes the qualified sock-footwear interface and leaves an outdoor item inside the boundary. A two-layer arrangement may still be justified where both layers are facility-issued and controlled; that is materially different from retaining an outdoor sock.

The gowning SOP should therefore answer a further set of questions:

At which pre-change stage are personal socks removed and facility socks donned, and how is the change observed?
How does the operator avoid contact between the uncovered or newly covered foot and the dirty-side floor?
Where are removed personal socks stored, and what prevents them re-entering the gowning route?
Are facility socks retained between exits and re-donned, or replaced at each entry?
If two layers are permitted, are both facility-issued and controlled, and was footwear fit qualified in that configuration?

Where budgets are constrained, phase implementation by risk. Start with the Grade B/C routes addressed by Annex 1, trial credible options, and use wearer feedback and observation data to refine the specification. This is more defensible than imposing a costly site-wide standard without a clear boundary or deferring action because the sock is not in direct product contact.

A small garment, but a defined control

Cleanroom socks are not the most critical element of an aseptic gowning system, but they now have a defined place in Annex 1. An ill-fitting or poorly tolerated product can create avoidable interventions during gowning. Selection should balance cleanliness evidence, fabric construction, fit, shift-long comfort, wearer acceptance, service model, environmental evidence and cost.

For specification support, review Isofield’s cleanroom accessories, alongside the wider cleanroom garment, glove and facemask ranges. Supporting product documentation can be checked through the Certificate Finder. A controlled sample trial remains the best way to test whether the proposed sock performs in your facility, with your footwear and over your actual shift pattern.

Gamma vs X-ray Sterilization for Cleanroom Coveralls: What’s the Difference?

Kanya — Wed, 09 Sep 2026 06:44:21 +0000

A practical guide for QA, regulatory and procurement teams qualifying sterile cleanroom garments, using Isofield Vista (gamma) & Isofield Steridon (X-Ray) as an example.

Gamma irradiation and X-ray irradiation are different ways of delivering ionising photon energy. If each finished garment has its own validated process, dose specification and routine controls, the customer reviews a very similar evidence set. The modality changes; the sterility-assurance logic does not.

Gamma is familiar, while X-ray is less familiar to many cleanroom users. That can be mistaken for a difference in assurance. For a qualified buyer, the useful question is whether the supplier has established the sterilisation dose, shown that the defined load can receive it without exceeding the maximum acceptable dose, and can prove routine control for the lot supplied. Those questions are the same for both modalities.

Two photon sources, one absorbed-dose language

Gamma irradiation uses high-energy photons released by the decay of Cobalt-60. X-ray starts with electrically accelerated electrons directed at a metal target, which converts their energy into high-energy photons. In both cases, the product absorbs ionising energy, and that absorbed dose is measured in kilograys, or kGy. STERIS describes both Gamma and X-ray as radiation processes supported by ISO 11137.

The engineering is different. A Gamma plant manages a continuously active radioisotope source and typically conveys cartons through the radiation field in carriers or totes. An X-ray plant generates photons only when the accelerator operates and can process defined pallet loads. This affects facility design, loading, capacity and logistics, but it does not create a separate definition of sterility.

The validation work is substantially the same

The common backbone is the ISO 11137 series. Part 1 covers development, validation and routine control; Part 2 covers dose establishment; and Part 3 addresses dosimetry. The current editions apply regardless of which radiation source is used.

In practical terms, both modalities require the supplier and sterilisation provider to build the same evidence chain. The product’s bioburden recovery method is validated. Representative lots are tested to estimate bioburden. A verification dose is selected and delivered within its permitted range. Irradiated samples undergo sterility testing. Once the dose is substantiated, performance qualification and dose mapping identify where the minimum and maximum doses occur within the defined load. Routine monitoring positions and release limits are then established.

This is what removes much of the perceived qualification burden. A customer changing from one already-validated sterile garment to another is not normally expected to recreate the steriliser’s microbiological validation or repeat the dose map. The supplier provides the validation pack. The customer reviews it through supplier qualification and change control, confirms suitability for the intended Grade A or B use, and integrates the garment into gowning qualification, procedures and the site’s Contamination Control Strategy.

Where a manufacturer transfers the same healthcare product between radiation sources, AAMI TIR104 provides specific guidance. That supplier-side transfer assessment is distinct from choosing between two finished garments with separate validations.

A worked example from the Isofield Steridon X-ray validation

Isofield’s Steridon validation used the VDmax25 method under ISO 11137-2. Three production batches produced an overall average bioburden of 25.1 CFU per unit. The applicable reference value was 26.0 CFU, giving a verification dose of 8.1 kGy with the permitted ±10% window. Ten samples were irradiated; the delivered dose was 7.85 to 8.11 kGy; and all ten sterility tests were negative. The study therefore substantiated 25 kGy as the minimum sterilisation dose for an SAL of 10⁻⁶.

The next question was physical dose delivery in the routine pallet configuration. The X-ray PQ mapped minimum and maximum absorbed-dose locations, established the routine monitoring position and assessed process capability. The customer specification was 25 to 40 kGy. The resulting Dose Uniformity Ratio was 1.32 against a maximum of 1.60, and the process was capable at a coverage factor of k=2. The routine monitoring release range was set at 29.4 to 35.6 kGy, with ratios linking that monitoring position to the minimum and maximum dose received by the product.

The microbiology, acceptance logic, dose units and lot-release principle will look familiar to anyone who has reviewed a Gamma validation. They are standard radiation-sterilisation controls.

Vista Sterile Coverall and Steridon Sterile Coverall: what the qualification file shows

Validation element	Vista: Gamma	Steridon: X-ray	Qualification meaning
Framework	ISO 11137 radiation validation	ISO 11137 radiation validation	Same assurance framework
Sterilisation claim	SAL 10⁻⁶	SAL 10⁻⁶	Same probability-based claim
Customer dose specification	25-40 kGy	25-40 kGy	Same minimum and maximum dose window
Dose substantiation	ISO 11137-2; sterility tests all negative	ISO 11137-2; sterility tests all negative	Same microbiological logic
PQ / dose mapping	DUR 1.24; capable at k=2	DUR 1.32; capable at k=2	Both below the 1.60 limit
Routine traceability	COP linked to Isofield COA / COC	COP linked to Isofield COA / COC	Lot evidence follows the same document flow

Source: Isofield Vista and Steridon validation records. Product-specific values shown; they should not be generalised to every Gamma or X-ray process.

What still matters to the customer

Similar validation paperwork does not make modality irrelevant or remove the need for controlled product qualification. Material and packaging compatibility must be supported at the maximum acceptable dose. Load density and configuration must match the qualified process. Shelf life and sterile-barrier integrity must be justified. A move between modalities or facilities belongs under supplier change control and the quality agreement.

At site level, the garment must still be assessed for barrier and particle performance, design, aseptic presentation, donning and operator qualification. Radiation validation shows that the packaged garment received a controlled sterilising dose. It does not qualify it for every process or operator.

The documents QA should expect to see

For either modality, a defensible file should contain the product specification and sterile claim; dose-substantiation and dose-mapping summaries; product and package compatibility across the approved range; current dose-audit status; and a lot-specific Certificate of Processing linked through the supplier’s COA or COC. The processing certificate should identify the run and confirm that dose remained inside the approved range.

Seen through a CCS lens, the flow is reassuringly familiar. Supplier validation establishes the process. Dose mapping connects the routine monitoring point to dose throughout the load. The Certificate of Processing demonstrates control of the run, and the COA or COC connects it to the garment lot received. Whether the photons came from Cobalt-60 or an accelerator does not change that traceability chain.

Common misconceptions

“X-ray is a lo wer-assurance shortcut.”

No. X-ray is covered by the same radiation-sterilisation framework. Assurance depends on the validated process and its routine control, not on how familiar the modality feels.

“A 25 kGy label is enough evidence.”

No. The important evidence is how 25 kGy was substantiated, how the maximum acceptable dose was justified, how the load was mapped and how each routine run is released.

“Changing garment modality means repeating the supplier's validation.”

Usually not when the proposed garment is already independently validated. The customer still needs formal change control and product qualification, but the heavy microbiology and dosimetry work should already exist in the supplier’s validation pack.

The practical conclusion

Gamma irradiation remains a mature, widely used and highly capable modality, and Isofield continues to use it for most of its sterile products. X-ray offers electrically generated photons and a different loading model, including qualified pallet configurations. These practical differences may influence availability, lead time, cost or supply resilience. They do not determine the level of sterility assurance.

The right question is not, “Which modality sounds safer?” It is, “Can the supplier show the validation and lot evidence?” For Vista and Steridon, that evidence is available through Isofield’s Validation Packs and lot-specific Certificate Finder. Customers can also review the Vista and Steridon product information, or contact Isofield to discuss a specific aseptic application.

“X-ray is a lower-assurance shortcut.”

No. X-ray is covered by the same radiation-sterilisation framework. Assurance depends on the validated process and its routine control, not on how familiar the modality feels.

“A 25 kGy label is enough evidence.”

No. The important evidence is how 25 kGy was substantiated, how the maximum acceptable dose was justified, how the load was mapped and how each routine run is released.

“Changing garment modality means repeating the supplier’s validation.”

The practical conclusion

Glove Selection Under GMP: Why Sterility Alone Is Not Enough

Kanya — Wed, 09 Sep 2026 06:42:10 +0000

ASEPTIC CONTAMINATION CONTROL: a short version of your CCS-led approach to glove selection, qualification, and use across Grade A, B, C, and D environments

Sterility is one attribute, not a contamination-control conclusion. Your CCS still must account for particles, extractables, ionic residues, endotoxin and what happens when the pouch is opened.
EU GMP Annex 1 does not use the commercial term “cleanroom glove”. It instead requires the CCS to identify contamination risks and justify the control chosen for each grade. That evidence-based obligation is more important than the product label.
The unit of qualification is the glove system, not the SKU. This includes the glove, packaging, transfer route, gown interface, use practices, and lot-specific evidence.

Sterile is not the same as cleanroom-clean

In many facilities, powder-free surgical gloves are accepted for cleanroom use because they are sterile. That confuses one verified attribute with the complete contamination-control requirement. Sterilisation addresses viable microorganisms; it does not remove particles, fibres, ionic residues or endotoxin, or demonstrate that the pouch can be opened and transferred without contaminating the gowning environment. Suitability must therefore be established for the glove, its packaging and its use in the intended process.

Medical, surgical and cleanroom describe different things

A medical glove is a broad regulatory category. Examination gloves may be sterile or non-sterile. Surgical gloves are normally sterile, hand-specific and paired for surgical use. A cleanroom glove is defined by its intended use in a contamination-controlled manufacturing environment and by the evidence supporting that use.

These categories can overlap, but the labels medical, surgical or sterile do not establish low particle release, low extractables, cleanroom packaging, validated transfer or lot evidence.

The standards make the distinction concrete. In Europe, medical gloves are commonly evidenced against the EN 455 series. International specifications include ISO 10282 for sterile surgical gloves and ISO 11193-1 for medical examination gloves. These address device performance and wearer or patient safety; they do not establish cleanroom particle release, extractable or ionic contamination, or packaging cleanliness. IEST-RP-CC005.4 supplies glove-specific test methods, while ISO 14644-18:2023 provides an intended-use assessment framework. A glove can satisfy medical-device requirements and still have no cleanroom-suitability data.

What EU GMP Annex 1 actually requires

Annex 1 does not use the commercial term “cleanroom glove”. Its language is broader and, when read in isolation, can appear vague. Paragraph 7.13 requires appropriately sterilised, non-powdered rubber or plastic gloves for Grade B, including access to or interventions into Grade A, and a second sterile pair over the garment sleeves. For Grade C and D, it states that additional gowning, including gloves, may be required for activities defined by the CCS as a contamination risk. EU GMP Annex 1

Read with the rest of Annex 1, the expectation is broader: clothing must be appropriate for the process and grade and limit shedding; items used in cleanrooms must minimise particle generation and tolerate repeated disinfection; transfer risks must be assessed and controlled; and the CCS must consider microbial, particulate and endotoxin or pyrogen contamination collectively.

The practical conclusion is clear. For Grade A and B, the baseline should be a sterile, non-powdered glove supported by cleanroom-relevant processing, packaging and qualification evidence. In Grade C and D, the CCS determines whether gloves are needed and whether they must be sterile. Whenever a glove is introduced as a contamination control, its behaviour must be characterised and justified for the task.

ISO 14644 does not provide a shortcut

ISO 14644-1 classifies air cleanliness by airborne particle concentration. It does not certify gloves, and an ISO Class 5 suitability claim is not evidence of glove cleanliness. ISO 14644-1

IEST-RP-CC005.4 supplies glove-specific methods covering particle release, extractable matter, barrier integrity, tensile and cut performance, outgassing and static charge. Together they provide a defensible CCS structure: the standard frames the assessment, the recommended practice supplies methods, and the CCS justifies the acceptance criteria. Without controlled, method-linked data, a supplier has provided a brochure rather than a qualification package.

What Isofield's comparative testing shows

Isofield compared selected surgical or medical glove systems with cleanroom glove systems using three challenges. These were in-house comparisons, not independent or peer-reviewed studies. The results apply to the tested products, packaging configurations and stated conditions; they are not a universal claim for every surgical glove. Relative to the cleanroom configurations, the tested medical pouch released more than 200 times more particles during opening; the tested medical gloves released approximately 35 times more under Helmke agitation and approximately 20 times more particles at 0.5 micrometres and above in DI-water extraction.

Source: Isofield in-house comparative testing presented in A Glove System for Your CCS. Results apply to the tested products and stated conditions.

Figure 1. Relative particle release in Isofield’s in-house comparison: >200× during pouch opening, approximately 35× under Helmke agitation and approximately 20× by LPC at ≥0.5 µm. Cleanroom configurations indexed at 1.0; tested products and stated conditions only.

The packaging result matters because the pouch is the first part of the glove system to enter the transfer path. A paper peel pouch may be appropriate for a clinical sterile field yet create a particulate event when torn in a gowning room. Alcohol may reduce viable contamination on an accessible surface; it does not remove embedded fibres, prevent paper shedding or validate the opening process.

Qualify the glove system, not only the SKU

A qualification that ends with material, size, AQL and a sterility certificate is incomplete. The object entering the CCS file is the full glove system: glove, packaging, transfer route, gown interface, donning sequence, sanitisation practice, inspection regime and lifecycle evidence.

Endotoxin deserves a defined position, not a passing mention. Where a glove presents a credible transfer pathway to exposed product or product-contact surfaces, the CCS should define and justify the applicable limit, reporting unit, test method and verification frequency. Isofield’s sterile cleanroom gloves are tested to EN 455-3 using the USP bacterial endotoxins method, with a specification of no more than 20 EU per pair. This is an Isofield product specification, not a numerical limit imposed by Annex 1 on every glove. A sterility certificate says nothing about pyrogens; the risk assessment must establish whether and how endotoxin conformance is required for the intended task.

Qualification element	Question for your site	Evidence expected
Intended use	Which grade, task and product exposure does the glove control?	URS, risk assessment and CCS linkage
Surface cleanliness	What particulate, extractable, ionic and endotoxin limits apply?	LPC or equivalent data, residue testing and, where relevant, an endotoxin specification. Isofield: ≤20 EU/pair (EN 455-3 / USP).
Packaging and transfer	What is opened at each grade transition and what does opening release?	Packaging specification, transfer study and opening challenge data
Sterility and lifecycle	How is the cycle linked to each lot and maintained through change control?	Validated process, COI/ COP or release record, supplier notification and periodic review
Gown interface and use	Does the cuff remain covered, and how is the glove donned, changed and inspected?	Gowning and intervention studies, approved SOP and operator qualification
Disinfection	Is the glove compatible with the site’s agents and wet-contact practice?	Compatibility, permeation or degradation evidence and a qualified sanitisation method

If you are already using surgical gloves in a classified area

Most sites are not choosing a glove from scratch; a surgical glove may already be written into the SOP. Where a site identifies a qualification gap, it should document the risk, implement justified interim controls, initiate change control or CAPA and remediate to a defined schedule. This does not itself establish that the current glove is suitable or prevent an inspection observation. It demonstrates that the gap has been recognised and is being actively controlled while suitability is established.

Assess the gap against the grade and task. Record what the current glove is not evidenced for: particle release, extractables, ionic residue, endotoxin, packaging transfer, disinfection compatibility, gown overlap and lot traceability.
Rank by exposure. Prioritise Grade A interventions over open product paths before lower-risk Grade C or D handling tasks.
Document interim controls. Outer-glove sanitisation, double gloving, restricted transfer, shorter change intervals and enhanced glove-print or fingertip monitoring may reduce risk, but their sufficiency must be justified for the task. Monitoring is not a substitute for suitable design.
Obtain controlled data. Request particle-release, extractable and endotoxin evidence against identified methods. An absence of data is a qualification gap to record and act upon.
Change-control the transition grade by grade. Convert Grade A and B first, qualify the incoming glove system through gowning and intervention studies, then reassess Grade C and D against the CCS.
Close the loop. Update the CCS critical control points, monitoring plan and periodic review so the change remains a contamination-control decision rather than a purchasing substitution.

This sequence keeps the decision, residual risk and remediation evidence inside the CCS and change-control record.

The cost question your CCS should answer

Surgical gloves often have a lower unit price, but the decision should compare total cost: qualification evidence, investigation burden and the consequences of an environmental-monitoring excursion, glove-print or media-fill failure, inspection observation or batch rejection. Evaluate the incremental glove cost against site-specific batch value and contamination risk. If the CCS identifies the glove as a critical control point, its specification is a quality control rather than a discretionary purchasing preference.

The audit question is not: is it sterile?

FDA’s aseptic-processing guidance expects sterile gloves to be sanitised or changed appropriately and recommends routine monitoring of operators’ gloves. Australia applies PIC/S PE009-17 through TGA GMP requirements. PIC/S convergence means the same core CCS rationale is likely to face scrutiny across member inspectorates: a controlled, qualified and monitored system, not reliance on a single supplier claim. FDA aseptic processing guidance | TGA PIC/S GMP requirements

A sterile surgical glove may be suitable for surgery and still be a weak choice for a pharmaceutical cleanroom. The issue is not sterility; it is the absence of evidence for particle release, extractables, packaging transfer, disinfection compatibility, gown overlap and lot traceability in the intended process.

Our position is straightforward: any glove entering classified GMP space is part of the contamination-control system and should be specified and qualified as a cleanroom consumable. In Grade A and B that means sterile, non-powdered and cleanroom-processed, with packaging and lot evidence supporting aseptic transfer. The CCS may set sterility requirements differently in Grade C and D, but it should never accept a product label in place of cleanroom-suitability evidence.

Before approving a surgical glove for classified space, ask the supplier for controlled, current evidence: particle-release data, packaging and transfer challenges, disinfection compatibility and lot-specific certificates. If the evidence is unavailable or cannot be linked to recognised methods and the supplied configuration, the qualification gap remains unresolved. View Isofield cleanroom gloves | Access validation packs | Find lot certificates

Regulatory and technical references

European Commission – EU GMP Annex 1: Manufacture of Sterile Medicinal Products
U.S. FDA – Sterile Drug Products Produced by Aseptic Processing, Current Good Manufacturing Practice
ISO 14644-1:2015 – Classification of air cleanliness by particle concentration
TGA – PIC/S Guide to GMP PE009-17 requirements
IEST-RP-CC005.4 – Gloves and Finger Cots Used in Cleanrooms and Other Controlled Environments
ISO 14644-5 – Cleanrooms and associated controlled environments: Operations
EN 455 series – Medical gloves for single use
ISO 10282:2023 – Single-use sterile rubber surgical gloves; ISO 11193-1:2020 – Single-use medical examination gloves
USP <85> and Ph. Eur. 2.6.14 – Bacterial endotoxins test

Choosing Sterile Gloves for EU GMP Annex 1 Cleanrooms: A Practical Guide

Kanya — Thu, 27 Nov 2025 06:44:30 +0000

This guide is engineered for Pharmaceutical manufacturers operating under EU GMP Annex 1. It explains how to select, validate, qualify, and routinely manage sterile gloves for Grade A/B/C/D environments with concrete, inspection-ready details. Use it as a specification template, training aid, and procurement playbook.

1) Executive summary (what to choose, fast)

Use disposable sterile gloves validated to a sterility assurance level (SAL) of 10^-6 (e.g., gamma-irradiated).
Material: cleanroom nitrile (low particulates/extractables); low protein sterile latex gloves where tactile acuity is critical and allergy risk is managed; avoid vinyl in Grades A/B.
AQL <= 0.65 for pinholes (Type I defects).
Endotoxin limit: target <= 20 EU/pair for aseptic processing.
Particle/ionic cleanliness: certified per lot with Certificate of Analysis (COA).
Length: 300–400 mm with beaded cuffs; use 400 mm+ where gown overlap is marginal.
Surface: textured/micro-roughened for IPA / Ethanol handling.
Packaging: pair-packed, walleted, sterile with lot-level irradiation and sterility certificates as
well as validation; designed for aseptic transfer.
Double-don protocol with sterile 70% IPA in-use disinfection at validated frequencies.

For Grades C/D, sterile gloves may still be required when handling sterilised components or high-risk operations; otherwise, non-sterile gloves may be acceptable where justified by risk assessment and SOPs.

2) What Annex 1 expects (and where gloves fit)

Grades A/B: Sterile gloves are mandatory; regularly disinfect during operations and replace when compromised.
Routine verification: Gloved fingertip sampling (pre/post) during media fills and routine monitoring; trend and act on recoveries.
Isolators/RABS: Use sterile, validated gloves/gauntlets; perform integrity testing at defined intervals and after interventions.
Training & qualification: Operators trained and periodically qualified in gowning and glove sanitization technique, including validated in-use disinfection.

Audit-ready tip: Map each Annex 1 clause related to gowning/gloving into your CCS and link to SOPs for selection, receipt, quarantine, release, in-use disinfection, replacement, EM, and deviations.

3) Materials comparison: sterile latex gloves vs nitrile vs vinyl

Type	Material	Barrier & durability	Chemical compatibility	Tactile sensitivity	Allergen risk	Typical use case
Sterile latex gloves	Natural rubber latex	Excellent elasticity; conforms to fingers	Moderate; avoid strong ketones/aromatics	Highest tactile acuity	Allergy risk (Type I)	Precision aseptic assembly
Sterile nitrile gloves	Synthetic nitrile rubber	High puncture/tear resistance; robust in wet IPA	Good vs many solvents, acids, chemotherapy agents, bases	Very good (slightly less than latex)	Latex-free (Type I & IV), if accelerator-free	Default for high-throughput aseptic lines
Sterile vinyl gloves	PVC	Lowest durability; higher tear risk	Poor–moderate; plasticizer migration risk	Low–moderate	Latex-free	Short tasks in Grades C/D; avoid for Grades A/B

Recommendation: In Annex 1 aseptic areas, favour sterile nitrile for the best overall balance; deploy sterile latex gloves for ultra-precision tasks when allergies are managed; generally avoid vinyl for critical aseptic operations.

4) Sterility & cleanliness specs to put in your URS

Include the following in your User Requirements Specification (URS) for disposable sterile
gloves:

1. Sterility: Gamma irradiation (ISO 11137) validated to SAL 10^-6 provide lot-level Certificate of Sterility and routine dose audit reports.

2. Bioburden & Endotoxin: Pre-sterilisation bioburden limits trended (ISO 11737). Endotoxin 20 EU/pair.

3. Particulate & chemical reporting: Cleanroom-compatible processing/packaging; certificates for NVR/ions; silicone-free options if needed.

4. Physical quality: AQL <= 0.65 for pinholes; tensile strength/elongation per EN/ASTM; powder-free.

5. Design: Length minimum 300–400+ mm; beaded cuffs; ambidextrous or hand-specific; textured fingertips or full-palm texture; high-contrast color for breach detection where appropriate.

6. Packaging & labelling: Cleanroom HDPE, Easy Tear preferred over Peel Pouch, Pair-packed, walleted, double/triple-bagged for unidirectional transfer; clear lot/expiry, irradiation indicator, storage conditions.

7. Documentation: COA/COC/COP per lot (sterility, endotoxin, AQL, particulate); change control notifications; shelf-life and stability data.

5) Double-don strategy & in-use disinfection (with examples)

8. Don gown per SOP; sanitize hands.

9. Don inner sterile glove (e.g., Green).

10. Apply sterile 70% IPA (contact time per label) without over-wetting seams.

11. Don outer sterile glove (e.g., White).

12. Disinfect outer gloves at defined frequency: at entry to Grade B/A, before critical manipulations, after touching non-product-contact surfaces, and every 15–30 minutes (as validated).

13. Replace outer glove if torn/soiled or after defined maximum wear time (e.g., 2–4 hours); replace inner glove per shift or upon compromise.

Isolators/RABS: Define gauntlet maximum use time and integrity test

6) Choosing between sterile nitrile vs sterile latex in Annex 1 operations

Frequent solvent/IPA handling, opt for sterile nitrile.
Microsurgical dexterity needed opt for Consider sterile latex gloves; manage allergy risk, check protein reporting.
High tear/puncture risk opt for Sterile nitrile cuff at 0.10-0.12 mm with textured palm and or fingers.
Extended wear/perspiration opt for Low-modulus sterile nitrile. Avoid inner coatings due to particulation risk.

7) Thickness, cuff length, and texture—how to specify

Thickness: 0.10 mm for tactile acuity; 0.12+ mm for durability.
Cuff length: Minimum 300mm; increasingly 400mm preferred by external auditors where sleeve overlap risk exists.
Texture: Fingertip texture for instruments; full-palm texture for vial/stopper grip in wet IPA.

8) Cleanroom grades and glove policy examples

Grade A: Cleanroom Sterile gloves mandatory; double-don; frequent disinfection; immediate change on compromise; fingertip monitoring per batch/shift.
Grade B: Cleanroom Sterile gloves; routine disinfection; time/event-based changes.
Grades C/D: Risk-based. Cleanroom Sterile gloves when handling sterilized components or open product-contact parts; otherwise high-quality non-sterile gloves acceptable per CCS and SOPs.

9) Compliance pack: what your QA will ask for

Validation packs (full product data, design, testing, packaging)
Vendor Quality Agreement (sterilization, change control, notifications).
Lot CoA/CoC: sterility/SAL, AQL, particulate/endotoxin, physical properties.
Irradiation validation summary and dose audits.
Shelf-life and packaging integrity studies; transit/shipping validation.
Allergen labeling and latex-free statements where applicable.
REACH, Prop 65 ROHS and extractables/leachables statements upon request.

10) Frequently asked questions

Q: Are non-sterile gloves acceptable in any Annex 1 area?

A: In Grades C/D, yes—if risk assessment shows no impact on product sterility and no exposed sterilized parts are handled. In Grades A/B, use sterile gloves.

Q: What AQL should we specify?

A: For aseptic operations, ≤ 0.65 is commonly specified to minimize breach risk; align with risk tolerance and validation data.

Q: Latex vs nitrile for aseptic assembly?

A: If maximum tactile acuity is critical and no latex sensitivity exists, sterile latex gloves perform well. Otherwise, sterile nitrile provides a strong balance with IPA compatibility.

Q: How often should we disinfect gloves?

A: Define frequencies via SOPs (e.g., entry to higher grade, before critical tasks, after touching non-critical surfaces, every 15–30 minutes) and verify via EM trends and media fills.

Q: What about EtO-sterilized gloves?

A: Unacceptable even if vendor meets ISO 11135/10993-7 and provides residual data. EtO implies paper packaging due to sterilization modality, and no paper packaging should be in A/B, C or D environments.

11) Selection matrix and URS template

Process scenario	Recommended glove	Notes
Aseptic filling (wet IPA, stoppering)	Sterile nitrile, textured, cuff 0.10–0.12 mm, 400 mm	Double-don; disinfect frequently
Aseptic micro-assembly	Sterile latex gloves, textured fingertips, 0.10 mm	Confirm no latex sensitivity; monitor fingertip EM
Component prep in Grade B	Sterile nitrile, 300 mm	Outer glove changes at defined intervals
Grades C/D equipment handling	High-quality non-sterile gloves (nitrile), 300 mm	Sterile when handling sterilized parts
Isolator/RABS gauntlet use	Validated sterile gauntlets + disposable sterile gloves (outer layer)	Integrity test gauntlets; event/time-based outer-glove changes

URS excerpt you can paste into procurement brief:

Disposable sterile gloves, SAL 10^-6 (gamma preferred), AQL <= 0.65, endotoxin <= 20 EU/pair.
Material: nitrile (primary); latex option for precision tasks; vinyl excluded for Grades A/B.
Powder-free, low NVR/ions; pair-packed, walleted, double-bagged.
Length >= 300 mm (>= 400 mm where indicated); textured fingertips/palm.
Lot documentation: CoA (sterility, AQL, endotoxin, particulate), irradiation certificate, expiry, storage.
Standards: ISO 11137/11135/10993-7, ISO 11737, EN 455/ISO 21420, EN ISO 374 (where applicable).
Supplier QA: change control, CoA availability within 24 h, annual review meeting.

12) Common pitfalls and how to avoid them

Specifying only “sterile gloves” without AQL/endotoxin/cleanliness criteria. Request Sterile Cleanroom Gloves.
Single-don policy in aseptic filling instead of double-don with contrasting colors.
Ignoring cuff length leading to wrist/forearm exposure during reach-in tasks.
Unvalidated disinfection frequency (too infrequent or excessive).
Latex sensitivity not managed with alternatives and surveillance.
Mixing brands/lots within a shift complicating deviations and trending.

13) How Isofield helps (and what to ask us for)

Isofield — Leading Manufacturer of Sterile Gloves

Disposable sterile gloves with SAL 10^-6, AQL <= 0.65, low endotoxin, and cleanroom-ready pair-packed, walleted, double-bagged presentation.
Options: sterile nitrile (standard and high-dexterity, white and Green for color contrast), sterile latex gloves for precision tasks, and controlled non-sterile gloves for Grades C/D per risk assessment.
Full lot traceability and CoA delivery with each shipment.

Evaluation support: Request our free sample kit (nitrile + latex variants, 300/400 mm, textured options). Our technical team will help align SOPs for double-don and in-use disinfection to Annex 1 expectations.

14) Glossary (quick refresher for QA and Operators)

AQL: Acceptance Quality Limit; lower value = tighter pinhole control.

CCS: Contamination Control Strategy; site-wide plan integrating gowning/gloving controls.

Endotoxin: Pyrogenic LPS; gloves for aseptic work should have low EU/pair levels.

IPA: Isopropyl alcohol; generally use 70/30 sterile product for glove disinfection.

SAL: Sterility Assurance Level; probability of a non-sterile unit (10^-6 for terminal sterilization).

URS: User Requirements Specification; your technical purchase spec.

Cleanroom PPE for Contract Development & Manufacturing Organisations

Kanya — Wed, 26 Nov 2025 11:11:18 +0000

For CDMOs and CMOs, cleanroom PPE must work across multiple modalities, cleanroom grades and client qualification expectations without creating extra suppliers, audits or change-control streams.

Isofield supplies cleanroom PPE for contract manufacturers that need sterile Grade A/B gowning, cleanroom-grade PPE for support areas, validation packs, change-control documentation, lot traceability and audit-ready supplier transparency.

With stock held in Ireland, The Netherlands and Malaysia, Isofield supports the variable ordering profile of CDMO operations, from clinical campaigns to commercial-scale supply.

Use this page to map Isofield sterile and non-sterile PPE to CDMO modalities, client qualification packs, audit expectations, change control and campaign-based supply.

The CDMO manufacturing environment

CDMO teams already know the complexity of serving multiple clients and modalities. From a PPE supplier perspective, the utility is standardisation: fewer approved suppliers, fewer audit trails and one controlled route for product documentation and change notifications.

Isofield supports sterile injectables, biologics, vaccines and cell and gene therapy operations with sterile and non-sterile cleanroom PPE specifications from a single supplier relationship.

That consolidated approach helps reduce duplicate qualification work, supplier audit volume and procurement administration while still supporting the different cleanroom grades and client requirements a CDMO site may carry.

Stock availability in Ireland, The Netherlands and Malaysia supports campaign-based ordering, clinical-to-commercial volume shifts and client-driven schedule changes without forcing full-container commitments

Regulatory framework for CDMOs

The regulatory frameworks for sterile injectables, biologics, vaccines and ATMPs are covered across the industry pages. For CDMOs, the PPE issue is not a different regulation; it is the multiplication of supplier qualification expectations across every client, product and market served.

That means the supplier file has to be broad enough for sterile fill-finish, upstream and downstream bioprocessing, ATMP operations and support areas, while remaining simple enough to defend in repeated client audits.

A single cleanroom PPE supplier across sterile and non-sterile areas can help keep client qualification packs consistent, reduce duplicated certificate requests and simplify change assessment across client portfolios.

Isofield supports that CDMO requirement with product validation packs, current certificates, batch traceability, change-control notification and an open-book audit approach that can be used in the CDMO’s own supplier qualification and client-facing responses.

The practical outcome is a PPE programme that helps CDMOs standardise where possible, differentiate by grade where required and keep the supplier-management workload under control.

PPE selection across CDMO modalities

CDMO PPE programmes typically span the full range of cleanroom grades and gowning specifications across the modalities served. The categories below show how Isofield products support that breadth without forcing a separate supplier for each grade.

Sterile cleanroom PPE for Grade A/B aseptic operations

Sterile cleanroom PPE supports aseptic operations across every sterile modality a CDMO produces, including sterile injectable fill-finish, biologics fill-finish, vaccine fill-finish and ATMP aseptic processing. Where the Grade A/B gowning specification is consistent, a single approved sterile PPE range can simplify client qualification and operator training.

Isofield supplies sterile cleanroom gloves in high-grade nitrile, polychloroprene (neoprene) and latex, validated for ISO Class 4 and ISO Class 5 environments, in 300mm, 400mm and 600mm lengths. The Vista and Horizon disposable garment ranges provide the sterile coverall specification required for Grade A/B operations. Sterile cleanroom facemasks and autoclavable goggles with anti-fog lenses complete the gowning specification.

Cleanroom PPE for Grade C/D and bioprocessing operations

Upstream bioprocessing and downstream purification operations across biologics, vaccine and ATMP manufacturing typically run at Grade C or Grade D. Isofield supplies non-sterile cleanroom gloves, garments, facemasks and goggles for ISO Class 7 and ISO Class 8 environments, with documentation that supports supplier qualification without over-specifying sterile PPE.

A CDMO PPE programme that includes both sterile and non-sterile specifications from a single supplier can reduce qualification complexity, supplier audit volume and procurement administration across the cleanroom grade range.

Accessories supporting full gowning programmes

Isofield cleanroom socks are EU GMP Grade A and B compatible, single-use, low-linting, with an hourglass heel design for operator comfort during long shifts. Single-use specification supports the gowning change frequency typical of multi-modality CDMO operations. Additional accessories complete the gowning specification across the cleanroom grades operated.

Why CDMOs choose Isofield

CDMO procurement and quality teams need utility beyond the product itself: qualification-ready documentation, audit access, change-control visibility and flexible supply that can follow client campaigns.

Documentation built for multi-client qualification

Full validation packs are available for every Isofield product line, providing sterility, endotoxin, particulate and biocompatibility documentation for supplier qualification dossiers. The Certificate Finder gives procurement and quality teams direct access to current product certifications when client requests or audit preparation timelines are tight.

The Change Control Notification process is structured for CDMO change management. Specification changes are communicated in advance so CDMO quality teams can assess the impact against each client’s requirements before a new specification enters production.

Audit-ready as standard

Isofield operates an open-book audit policy, welcoming end-user audits at the manufacturing site annually. For CDMOs, that matters because client audit expectations often cascade into sub-tier supplier assurance, and the PPE supplier may need to be visible in that chain.

Manufacturing is in-house in Malaysia with operations under one roof and a GMP-trained team across quality and operations, providing the operational visibility that audit programmes require.

Supply flexibility for variable demand

Stock held in Ireland, The Netherlands and Malaysia supports the variable demand profile typical of CDMO operations. Pallet-volume ordering helps CDMOs align PPE inventory with campaign-based schedules without taking on full-container commitments.

In-house manufacturing in Malaysia supports the volume requirements of large-scale CDMO operations and the lead-time predictability commercial production demands.

ESG and ethical procurement support

Isofield holds SEDEX membership since 2023 and EcoVadis certification. For CDMOs, those credentials help answer client-driven ESG and ethical procurement questions without creating a separate evidence-gathering exercise for every customer audit.

FAQs

What modalities does Isofield support for CDMO operations?

Isofield supplies cleanroom PPE for the full range of modalities CDMOs typically produce, including sterile injectable fill-finish, biologics drug substance and drug product manufacturing, vaccine production across multiple platforms, and cell and gene therapy operations. The product range covers cleanroom grades from Grade A/B sterile operations through to Grade C/D bioprocessing environments.

How does Isofield support CDMO supplier qualification?

Isofield supports CDMO supplier qualification through full validation packs for every product line, current certificates of conformity available through the Certificate Finder, documented change control notifications, and an open-book audit policy welcoming end-user audits at the manufacturing site. The documentation is structured to support the multi-client qualification framework that CDMOs operate under.

Can Isofield support audits from CDMO clients as well as the CDMO itself?

Yes. Isofield welcomes end-user audits at the manufacturing site annually under an open-book policy. CDMOs that need to support direct audits from their clients to Isofield as a sub-tier supplier should speak to Isofield directly to align audit scheduling and access.

Does Isofield support both clinical-stage and commercial CDMO operations?

Yes. The inventory model with stock in Ireland, The Netherlands and Malaysia supports both clinical-stage operations running lower volumes and commercial-scale operations running at high volume. Validation pack documentation supports both clinical and commercial supplier qualification activities.

How does Isofield support change control across multiple CDMO clients?

The Isofield Change Control Notification process communicates any specification change in advance of implementation, allowing CDMO quality teams to assess the change against each client’s change management procedures before the new specification is introduced. This supports the multi-client change management framework that CDMOs operate under.

How does Isofield support CDMO supplier qualification?

Isofield can support medical device and combination-product CDMOs where cleanroom PPE requirements align with the Isofield range. Because device manufacturers operate under MDR, IVDR and 21 CFR Part 820 rather than EU GMP Annex 1 alone, teams should confirm documentation and qualification requirements with Isofield before specification.

Get in touch

Speak to the Isofield team about cleanroom PPE for contract development and manufacturing operations, request free samples for evaluation, or download the Isofield Cleanroom Product Catalogue.

Cleanroom PPE for Vaccine Manufacturing

Kanya — Wed, 26 Nov 2025 10:00:19 +0000

For vaccine manufacturers, cleanroom PPE has to support high-volume aseptic fill-finish, platform changeovers and reliable supply without making long-shift comfort or operator visibility the weak point.

Isofield supplies sterile cleanroom gloves, garments, facemasks and goggles for Annex 1-aligned fill-finish, plus cleanroom PPE for upstream and downstream areas across mRNA, viral vector, conjugate and recombinant protein vaccine platforms.

Use this page to map Isofield PPE to vaccine fill-finish, upstream and downstream support areas, long-campaign use, validation needs and supply resilience.

The vaccine manufacturing environment

Vaccine sites already know the process differences between platforms. The PPE requirement is to support the cleanroom grade, campaign length, operator workload and contamination-control profile of each stage.

Isofield supports Grade A/B aseptic fill-finish with sterile cleanroom PPE and provides non-sterile cleanroom PPE for upstream, downstream and support areas where lower grades and different gowning frequencies are appropriate.

For high-volume production, the practical considerations are volume availability, comfort over long shifts, anti-fog visibility, glove tactility and documentation that supports supplier qualification across global programmes.

Regulatory framework for vaccine manufacturing

For PPE selection, the practical requirement is platform-independent at fill-finish: sterile Grade A/B gowning with documentation strong enough for supplier qualification and change control.

Where the platform differs is upstream and downstream. mRNA, viral vector, conjugate, recombinant and traditional platforms can create different gowning frequency, biosafety and operator-protection considerations before the product reaches fill-finish.

Isofield’s utility is in supporting both parts of that programme: sterile gloves, garments, facemasks and goggles for fill-finish, and cleanroom-grade PPE for support areas where terminal sterility is not required.

For manufacturers serving global or public-health programmes, validation packs, certificates and change-control documentation help keep the PPE supplier file aligned across markets and customer audits.

PPE selection for vaccine manufacturing

Vaccine manufacturers operate across multiple cleanroom grades and require a PPE programme that can move from development and clinical batches to high-volume campaigns without changing supplier logic.

Sterile cleanroom PPE for aseptic fill-finish

Vaccine fill-finish operates at Grade A within Grade B background under EU GMP Annex 1. The PPE specification matches that required for any sterile pharmaceutical fill-finish operation: sterile gloves, sterile garments providing full body coverage, sterile facemasks and protective eyewear, all validated to a defined Sterility Assurance Level and supplied in sterile packaging.

Vaccine fill-finish operations are often high-volume and run for extended shifts. PPE specification therefore has to support extended wear, anti-fog visibility, glove sensitivity over repeated manipulations and reliable supply at the volumes vaccine manufacturers consume.

Cleanroom PPE for upstream and downstream operations

Upstream bioprocessing and downstream purification for vaccine manufacturing typically operates in Grade C or Grade D background environments. PPE for these stages does not require terminal sterilisation but must meet cleanroom standards for low particulate generation and consistent fit.

Isofield supplies non-sterile cleanroom gloves, garments, facemasks and goggles specified for ISO Class 6 to ISO Class 8 environments, with full validation documentation supporting supplier qualification for vaccine manufacturers.

Accessories for vaccine manufacturing

Isofield cleanroom socks are EU GMP Grade A and B compatible, single-use, low-linting, with an hourglass heel design for operator comfort during long shifts. Single-use specification supports the gowning change frequency typical of high-volume vaccine production. Additional accessories complete the gowning specification for vaccine operations.

Considerations specific to vaccine manufacturing

Four operational characteristics make vaccine PPE worth treating as more than a generic fill-finish specification.

Volume and reliability of supply. Vaccine fill-finish lines can consume PPE at high volume during long campaigns. Isofield’s inventory model, with stock held in Ireland, The Netherlands and Malaysia, supports repeat ordering without forcing a container-only supply model.

Extended shift performance. Anti-fog goggle performance, sterile glove tactile sensitivity, facemask comfort and garment breathability become operationally significant when teams are gowned for long vaccine production shifts.

Platform and campaign changeover. Sites producing multiple vaccine platforms need PPE that works across shared infrastructure while keeping change-control and lot-traceability records simple between campaigns.

Biosafety and cleanroom control. Where a platform involves live, attenuated or inactivated pathogens, PPE selection has to satisfy the biosafety risk assessment as well as the cleanroom contamination-control standard.

Global qualification support. Validation packs, current certificates and documented change-control notifications help vaccine manufacturers maintain supplier files across global programmes and customer audits.

Why vaccine manufacturers choose Isofield

Vaccine manufacturers need suppliers that can support both qualification and consumption: documentation strong enough for Quality, and supply flexible enough for long campaigns, scale-up and demand surges.

Full validation packs are available for every Isofield product line, and the Certificate Finder gives buyers direct access to current product certifications. The Change Control Notification process gives Quality and Procurement early visibility of specification changes before they affect commercial vaccine production.

Manufacturing in-house in Malaysia with stock in Ireland, The Netherlands and Malaysia supports the volume and reliability requirements of vaccine production, with flexible ordering aligned to clinical, commercial and surge-response demand patterns.

Isofield welcomes multiple end-user audits annually under an open-book policy, holds SEDEX membership and EcoVadis certification, and supports the ESG and ethical procurement criteria built into pharmaceutical supplier qualification.

FAQs

What cleanroom grade is vaccine manufacturing carried out in?

Vaccine manufacturing operates across multiple cleanroom grades. Aseptic fill-finish operates at EU GMP Grade A within Grade B background, equivalent to ISO Class 5 in operation surrounded by ISO Class 7. Upstream bioprocessing and downstream purification operations typically run at Grade C or Grade D depending on the specific process technology and whether the operation is open or closed.

Does Isofield supply PPE for mRNA, viral vector and conjugate vaccine manufacturing?

Isofield’s sterile cleanroom PPE range is suitable for fill-finish operations across all major vaccine platforms including mRNA, viral vector, conjugate, recombinant protein, and traditional inactivated and attenuated vaccines. The PPE specification for Grade A/B aseptic fill-finish is consistent across vaccine platforms, with platform-specific upstream considerations supported by the wider Isofield product range.

How does Isofield support high-volume vaccine production?

Isofield supports high-volume vaccine production through in-house manufacturing in Malaysia, stock held in Ireland, The Netherlands and Malaysia, for short lead times, and an inventory model that allows flexible pallet-volume ordering rather than container-only supply. This supports the volume and reliability requirements of commercial vaccine production.

Does Isofield supply both clinical-stage and commercial vaccine manufacturers?

Yes. The flexible inventory model and full validation pack documentation support both clinical-stage manufacturers operating at lower volumes and commercial manufacturers operating at scale. Isofield supports clinical and commercial supplier qualification activities through the Certificate Finder, validation packs and the open-book audit policy.

Can Isofield support vaccines manufactured for global health programmes, including WHO prequalification?

Isofield’s validation pack documentation and certifications support supplier qualification for vaccines manufactured for global health programmes, including those subject to WHO prequalification. Manufacturers operating in these programmes should speak to Isofield directly to align documentation with the specific regulatory submissions in their authorisation pathway.

Get in touch

Speak to the Isofield team about cleanroom PPE for vaccine manufacturing, request free samples for evaluation, or download the Isofield Cleanroom Product Catalogue.

Cleanroom PPE for Cell & Gene Therapy Manufacturing

Kanya — Wed, 26 Nov 2025 09:42:12 +0000

For cell and gene therapy manufacturers, PPE has to support sterility assurance, batch segregation and frequent gowning changes while still allowing operators to perform delicate manual manipulations accurately.

Isofield supplies sterile cleanroom gloves, garments, facemasks and goggles for Grade A/B ATMP operations, plus cleanroom-grade options for closed-system and lower-grade support areas, with validation packs, traceability and change control documentation to support supplier qualification.

Use this page to map Isofield sterile and non-sterile PPE to ATMP gowning changes, batch segregation, manual manipulations, documentation needs and flexible supply.

The cell and gene therapy manufacturing environment

Cell and gene therapy sites usually have a more operator-driven risk profile than conventional fill-finish. From a PPE perspective, the priority is supporting segregation, batch changeover and manual aseptic work without increasing gowning complexity.

Isofield Clean and Clean Sterile PPE ranges support Grade A/B manipulations in biosafety cabinets, isolators and open processing environments, with single-use options suited to batch-to-batch gowning changes and product segregation routines.

For closed-system or lower-grade areas, Isofield also supports cleanroom-grade non-sterile PPE specifications so teams can avoid over-specifying sterile gowning where the process risk does not require it.

Regulatory framework for ATMPs

For PPE selection, the practical requirement is clearer than the regulatory terminology: Grade A/B manipulations require sterile gowning that supports sterility assurance, while lower-risk closed-system areas may need cleanroom-grade PPE rather than terminally sterilised PPE.

Because many ATMP processes are small-batch, manual and patient- or donor-linked, the PPE programme has to support documented segregation as much as conventional contamination control. Gloves, garments, masks and goggles need to fit the batch record, changeover SOP and gowning qualification routine.

Isofield’s utility in this context is the combination of sterile product options, cleanroom-grade non-sterile options, validation packs, certificates and change-control documentation that can be aligned with the customer’s ATMP quality system.

That matters in practice because the right product mix can reduce unnecessary gowning burden while keeping critical manipulations protected and documented.

PPE selection for cell and gene therapy manufacturing

The PPE specification for cell and gene therapy production has to balance sterility assurance, manual dexterity, batch segregation and change frequency.

Sterile Cleanroom Gloves

High-grade nitrile, polychloroprene (neoprene) and latex sterile cleanroom gloves are validated for ISO Class 4 and ISO Class 5 environments. 300mm, 400mm and 600mm options help teams select glove length around biosafety cabinet work, isolator interfaces, double-gloving and the reach required for fine manipulations. Selection considerations for ATMP manufacturing include sterility assurance, AQL specification, tactile sensitivity, compatibility with disinfectants and the change frequency created by patient-specific or donor-specific batch handling. View Isofield cleanroom gloves

Sterile Cleanroom Garments

The Vista and Horizon disposable garment ranges are designed for ISO Class 4 and ISO Class 5 environments. Sterile coveralls provide full-body coverage for Grade A/B ATMP operations where the garment has to support both contamination control and repeated gowning qualification. For cell and gene therapy operations, the utility is consistency: packaging that supports sterile transfer, fit that operators can repeat correctly, and single-use availability that fits batch-to-batch changeover routines.

Sterile Cleanroom Facemasks

Validated for sterility and designed for EU GMP Annex 1 compatibility, cleanroom facemasks in ATMP operations need to provide full coverage that works with hoods and goggles during long manual processing periods.

Cleanroom Goggles

Autoclavable with anti-fog lenses, cleanroom goggles are available in indirect and non-vented configurations. Anti-fog performance and fit alongside facemasks and hoods matter where operators are carrying out long, visually demanding cell-processing manipulations.

Cleanroom Socks and Accessories

EU GMP Grade A and B compatible, single-use and low-linting, cleanroom socks use an hourglass heel design for operator comfort during long shifts. Single-use specification supports the high gowning change frequency typical of ATMP operations.

Considerations specific to cell and gene therapy

Four operational realities make cell and gene therapy PPE different from conventional sterile pharmaceutical production.

Frequent gowning changes. ATMP facilities may process multiple patient- or donor-linked batches in a working day, with full or partial gowning changes between batches. Single-use sterile PPE helps make that change frequency practical and keeps segregation visible in the batch record.

Batch segregation. Autologous and allogeneic processes require clear separation between patient or donor material. PPE contributes to that separation alongside facility design, equipment dedication and procedural controls, so lot traceability and change-control documentation matter.

Closed and open processing in the same facility. Closed systems may reduce the need for full sterile gowning in some areas, while open manipulations still require Grade A/B sterile PPE. Isofield’s sterile and non-sterile ranges help teams avoid a one-spec-fits-all programme.

Manual dexterity. Many ATMP operations rely on trained operators carrying out fine manipulations. Glove feel, goggle clarity, garment fit and mask comfort are quality considerations because PPE that impedes performance can affect the process.

Why cell and gene therapy manufacturers choose Isofield

ATMP manufacturers need suppliers that understand variable volumes, qualification pressure and the operational reality of frequent product or patient-specific changeovers.

Isofield provides validation packs, current certificates through the Certificate Finder and documented change control notifications for specification adjustments. That gives Quality teams the evidence needed to qualify sterile PPE once and keep it controlled as the programme evolves.

Manufacturing in-house in Malaysia with stock held in Ireland, The Netherlands and Malaysia supports flexible ordering aligned to ATMP demand, where clinical batches, tech transfer and commercial scale-up rarely follow a smooth consumption curve.

Isofield’s SEDEX membership, EcoVadis certification and open-book audit policy give procurement and supplier quality teams additional assurance material for ATMP supplier qualification.

FAQs

What cleanroom grade is cell and gene therapy manufacturing carried out in?

Cell and gene therapy manufacturing typically operates with critical processing performed in Grade A environments (within biosafety cabinets, isolators or closed systems) surrounded by Grade B background. Some closed-system operations may run in Grade C background. Specific grade requirements depend on the operation and whether processing is open or closed. Annex 1 expectations apply to all sterile ATMP operations.

How does ATMP manufacturing differ from conventional sterile pharmaceutical manufacturing?

ATMP manufacturing differs in several material ways. Many products are autologous (patient-specific) with no opportunity for terminal sterilisation or rework. Batch sizes are small and batch frequency is high, demanding more frequent gowning changes than conventional sterile production. Cross-contamination between patient batches is a primary regulatory concern. Single-use and closed-system technologies are widely used. The PPE programme has to support all of these characteristics.

Does Isofield supply autologous and allogeneic therapy manufacturers?

Yes. The Isofield sterile cleanroom PPE range supports both autologous and allogeneic cell and gene therapy manufacturing. The PPE specification for Grade A/B aseptic processing is consistent across both autologous and allogeneic operations, with the additional segregation, change control and traceability requirements of ATMP manufacturing supported by the documentation Isofield provides.

Can Isofield support ATMP manufacturers operating under both EU and US regulatory frameworks?

Isofield products are designed to comply with EU GMP Annex 1 requirements, with full validation documentation supporting supplier qualification for ATMP manufacturers operating under EU GMP, US FDA cGMP, or both frameworks. Manufacturers operating across both regions should speak to Isofield directly to align documentation with their specific regulatory submissions.

Does Isofield support clinical-stage as well as commercial ATMP manufacturers?

The flexible inventory model with stock in Ireland, The Netherlands and Malaysia supports clinical-stage manufacturers who may operate at lower volumes and with less predictable demand than commercial manufacturers. The full validation pack documentation supports both clinical and commercial supplier qualification activities.

Get in touch

Speak to the Isofield team about cleanroom PPE for cell and gene therapy manufacturing, request free samples for evaluation, or download the Isofield Cleanroom Product Catalogue.

Cleanroom PPE for Sterile Injectables Manufacturing

Kanya — Wed, 26 Nov 2025 08:34:25 +0000

For sterile injectable manufacturers, cleanroom PPE has to protect the critical zone, support Grade A/B intervention routines and give Quality a product-and-documentation package that can move through supplier qualification without unnecessary friction

Isofield supplies sterile cleanroom gloves, garments, facemasks and goggles for Annex 1-aligned fill-finish operations, with glove lengths, garment systems, validation packs, batch-level traceability and change control protocols built into the supplier relationship.

Use this page to map Isofield product categories to sterile injectable operations: aseptic fill-finish, isolator and RABS routines, conventional cleanrooms, supplier qualification and ongoing supply support.

The sterile injectables manufacturing environment

For sterile injectable sites, the PPE decision is operational: maintain a robust sterile barrier during interventions, sanitisation and changeover without reducing operator dexterity or slowing the line.

Isofield supports isolator, RABS and conventional cleanroom operations with sterile glove, garment, facemask and goggle specifications for Grade A/B environments, plus validation documentation for supplier qualification and Contamination Control Strategy files.

EU GMP Annex 1 personnel and gowning expectations

Annex 1 matters here because it turns gowning into a documented contamination-control input. For Isofield customers, the practical impact is that gloves, garments, facemasks and goggles have to be specified together, qualified together and supported by evidence that Quality can file without rework.

Personnel entering Grade A/B areas need sterile full-body garments, sterile gloves and sterile facemasks, with protective eyewear where required. Isofield’s utility is in supplying those elements as a coherent cleanroom PPE set rather than a disconnected bundle of consumables.

Glove choice is particularly operational: length, material, AQL, tactile sensitivity and compatibility with sanitising agents all affect interventions, double-gloving and operator confidence. Isofield’s 300mm, 400mm and 600mm sterile glove options help teams match the glove to the line and gowning protocol.

Garments, facemasks and goggles matter for long shifts and repeat interventions. Disposable sterile coveralls, cleanroom facemasks and autoclavable anti-fog goggles are positioned to support both contamination control and operator usability in the Grade A/B working routine.

The supporting validation packs give Quality the sterility, endotoxin, particulate and biocompatibility evidence needed to integrate the selected PPE set into supplier qualification and CCS documentation.

PPE selection for sterile injectable manufacturing

The highest-value PPE programme for sterile injectables is one that operators can use consistently and Quality can defend during audit. The categories below show how the Isofield range maps to that requirement.

Sterile cleanroom gloves

Isofield supplies sterile cleanroom gloves in high-grade nitrile, polychloroprene (neoprene), and latex, validated for ISO Class 4 and ISO Class 5 environments. Glove lengths are available at 300mm, 400mm and 600mm to support the range of gowning protocols used across fill-finish operations, including double-gloving practices common in Grade A operations.

Selection considerations for sterile injectable manufacturing include sterility assurance level, Endotoxin reporting, Particle shedding, AQL specification, tactile sensitivity for fine manipulation work, chemical compatibility with cleaning and disinfection agents in use, and length appropriate to the gowning protocol.

Sterile cleanroom garments

The Isofield Vista and Horizon disposable garment ranges are designed for ISO Class 4 and ISO Class 5 environments. Sterile coveralls provide the full body coverage required by Annex 1 for Grade A/B operations, with attention to fabric specification, protective elements as required, particulate generation, and seam integrity.

For sterile injectable manufacturing, key considerations include sterile packaging integrity, fabric performance under operational conditions, and consistency of fit across the operator population to support the gowning qualification process.

Sterile cleanroom facemasks

Isofield sterile cleanroom facemasks are validated for sterility and designed for EU GMP Annex 1 compatibility. Unlike surgical facemasks used in healthcare settings, Isofield cleanroom facemasks are specified for the controlled-environment requirements of aseptic manufacturing.

Selection considerations include full coverage of the nose and mouth, fluid resistance, fit and seal performance, and sterility assurance documentation.

Cleanroom goggles

Isofield cleanroom goggles are autoclavable with anti-fog lenses and available in indirect and non-vented configurations to ensure EU GMP Annex 1 compliance. Configuration choice depends on the specific operation and the surrounding environment classification.

Selection considerations include compatibility with the gowning protocol, fit alongside facemasks and hoods, anti-fog performance over extended shifts, and sterilisation compatibility for reusable specifications.

Cleanroom socks and accessories

Isofield cleanroom socks are EU GMP Grade A and B compatible, single-use, low-linting, with an hourglass heel design for operator comfort during long shifts.

Why sterile injectable manufacturers choose Isofield

The value here goes beyond product availability. It’s about reducing qualification friction at the point where cleanroom PPE touches your Contamination Control Strategy, media fills, gowning qualification and routine environmental monitoring.

Full validation packs give Quality the sterility, endotoxin, particulate and biocompatibility documentation needed for supplier qualification dossiers. A Certificate Finder gives buyers direct access to current certifications, while a Change Control Notification process helps prevent supplier-driven specification changes from arriving as a production surprise.

The company operates an open-book audit policy, welcoming end-user audits at its manufacturing site annually. Production is in-house in Malaysia, with operations under one roof and a GMP-trained team across quality and operations, giving customers a direct route into supplier assurance rather than a black-box distributor model.

Stock held in Ireland, the Netherlands and Malaysia supports order flexibility during scale-up, technical transfer and demand fluctuations, without forcing customers into full-container commitments or long lead-time ordering cycles.

SEDEX membership and EcoVadis certification support the supplier ESG and ethical procurement requirements increasingly built into pharmaceutical supplier qualification processes.

Technical considerations for fill-finish PPE programmes

For fill-finish teams, cleanroom PPE has to behave predictably during qualification and routine use. Operators need dexterity, garment fit must support gowning qualification, and batch documentation must be easy to retrieve when deviation or audit questions arise.

During PPQ, aseptic process simulation or line changes, a stable PPE specification helps avoid introducing unnecessary variables. Clear validation documentation and a defined change-control process make it easier to keep PPE qualification aligned with wider aseptic process qualification, particularly relevant for Grade A cleanroom PPE programmes and aseptic gowning suppliers being assessed as part of a facility’s CCS.

Routine glove fingertip and gown monitoring generates feedback on how the gowning system performs. Where the data points to fit, glove length or change-frequency issues, specifications can be adjusted without unnecessarily widening the supplier qualification exercise.

Because supplier-driven changes can trigger internal change control, advance notification is a practical utility rather than a paperwork extra, giving Procurement and Quality time to assess specification changes before implementation.

For production planning, local stock across Europe and Asia reduces reliance on container-only supply models and helps sites manage scale-up, technical transfer and demand swings without interrupting approved PPE use.

FAQs

What grade of cleanroom is sterile injectable manufacturing carried out in?

Sterile injectable manufacturing is typically carried out with the critical zone at EU GMP Grade A, equivalent to ISO Class 5 in operation, surrounded by a Grade B background equivalent to ISO Class 7. Earlier preparation and support areas operate at Grade C and Grade D. The specific environmental classification depends on the technology in use, with isolator operations allowing lower-grade background environments than conventional fill lines.

What are the EU GMP Annex 1 gowning requirements for sterile injectables?

EU GMP Annex 1 requires sterile garments providing full body coverage, sterile gloves, sterile facemasks covering the nose and mouth, and protective eyewear for personnel entering Grade A and Grade B environments. Personnel must complete documented gowning qualification before entering classified areas, and gowning is supported by routine personnel monitoring through glove fingertip and gown contact plates. The 2022 revision of Annex 1, effective 25 August 2023, materially tightened expectations on gowning, qualification and contamination control strategy.

What is the difference between sterile and non-sterile cleanroom PPE for injectables?

Sterile cleanroom PPE has been validated to a defined Sterility Assurance Level, typically through gamma irradiation, and is supplied in sterile packaging suitable for use in Grade A and Grade B aseptic processing environments. Non-sterile cleanroom PPE is manufactured to cleanroom standards but has not undergone terminal sterilisation, and is appropriate for Grade C and Grade D environments and earlier preparation areas where sterility is not required.

Does Isofield supply PPE for isolator and RABS operations?

Yes. The Isofield product range supports the full spectrum of sterile injectable containment technologies including isolators, Restricted Access Barrier Systems (RABS) and conventional cleanroom fill operations. Each technology has different implications for gowning specification, and Isofield’s PPE range is designed to meet the requirements of all three.

Can Isofield support new fill-finish facility qualification?

Isofield supports new facility qualification through full validation packs, current certificates of conformity available via the Certificate Finder, change control documentation, and an open-book audit policy welcoming end-user audits at the manufacturing site. Speak to the Isofield team early in your facility qualification timeline to align on documentation, sample provision and supplier qualification activities.

Get in touch

Speak to the Isofield team about cleanroom PPE for sterile injectable manufacturing, request free samples for evaluation, or download the Isofield Cleanroom Product Catalogue

PPE for Biologics and mAbs Manufacturing

Kanya — Wed, 26 Nov 2025 07:24:42 +0000

Cleanroom PPE for Biologics and Monoclonal Antibody Manufacturing

For biologics and monoclonal antibody manufacturers, the PPE challenge is less about explaining the process and more about supporting different cleanroom grades across upstream, downstream and aseptic fill-finish operations.

Isofield supplies cleanroom PPE for the full biologics manufacturing chain, including sterile Grade A/B gowning for fill-finish and cleanroom-grade gloves, garments, facemasks and goggles for support and bioprocessing areas.

Use this page to map sterile and non-sterile Isofield PPE to biologics cleanroom grades, from upstream and downstream bioprocessing through to aseptic fill-finish.

The biologics manufacturing environment

Biologics facilities commonly need a PPE programme that flexes across multiple cleanroom grades rather than a single universal specification.

Isofield supports that requirement with sterile PPE for Grade A/B aseptic fill-finish and non-sterile cleanroom PPE for upstream, downstream and support areas where ISO Class 7/8 or Grade C/D specifications are appropriate.

Regulatory framework

The PPE implication is consistent across both regions: sterile gowning to Annex 1 standards for fill-finish, cleanroom-grade gowning for upstream and downstream, and supplier documentation that supports the most demanding framework the site ships into.

PPE selection across the biologics manufacturing chain

The PPE specification varies across the manufacturing chain. The categories below show how Isofield products support upstream, downstream and fill-finish use without forcing a separate supplier model for each area.

Upstream and downstream bioprocessing

Upstream cell culture and downstream purification operations typically run in Grade C or Grade D background environments, equivalent to ISO Class 7 or 8 in operation. PPE for these stages does not require terminal sterilisation but must meet cleanroom standards for low particulate generation, low extractables and consistent fit.

Isofield supplies non-sterile cleanroom gloves and garments specified for ISO Class 7 and ISO Class 8 environments, with the full validation documentation that pharmaceutical quality teams require for supplier qualification. Cleanroom facemasks and goggles complete the gowning specification for these stages.

Aseptic fill-finish for biologics

Biologics fill-finish runs at Grade A within Grade B and takes the same sterile gowning specification as any Annex 1 fill operation. For full specification detail, see the our post on sterile injectables the spec is identical at the fill-finish stage. A summary of the Isofield range follows.

Isofield’s sterile cleanroom PPE range is validated for ISO Class 4 and ISO Class 5 environments and designed to comply with EU GMP Annex 1 requirements. The Vista and Horizon disposable garment ranges, sterile latex and nitrile gloves in 300mm, 400mm and 600mm lengths, sterile facemasks validated for cleanroom use, and autoclavable goggles with anti-fog lenses provide the full sterile gowning specification.

Considerations specific to biologics

Three things make biologics PPE different from small-molecule sterile manufacturing, and they should drive the specification more than the cleanroom grade does.

Single-use integration. Biologics adoption of single-use bioreactors, tubing assemblies and connection systems means more aseptic connections, sampling events and gowning interactions. The PPE programme has to be costed and stocked against that reality, with sterile gloves that support tactile aseptic connections and change intervals set by the site’s actual manipulation profile rather than a generic fill-line assumption.

Multi-product changeover. A biologics suite producing multiple mAbs or recombinant products on shared infrastructure runs gowning as part of the changeover sequence, not separately from it. Garments, gloves and accessories need to support full re-gowning between campaigns, and the supplier needs batch and lot traceability that fits the changeover SOP.

Operator protection alongside product protection. Cell culture handling, viral vector work and open manipulation of biological material may introduce biosafety considerations alongside cleanroom control. PPE selection therefore has to account for glove integrity, garment coverage and goggle/facemask compatibility without compromising the cleanroom specification.

Isofield works with biologics manufacturers to specify PPE programmes appropriate to the operational reality of each facility rather than applying a single standard across all biologics operations.

Why biologics manufacturers choose Isofield

Using one supplier across sterile fill-finish and non-sterile bioprocessing can reduce duplicate qualification work and keep change control on one notification stream instead of several, a practical advantage for facilities managing single-use bioprocessing PPE alongside sterile gowning requirements.

Full validation packs cover every product line for supplier qualification dossiers. A Certificate Finder gives buyers direct access to current certifications. The Change Control Notification process gives procurement and quality teams advance notice of specification changes. This matters more for biologics than for small-molecule lines: a glove or garment spec change can touch both single-use bioprocessing and aseptic fill-finish under one supplier qualification, and both have to revalidate.

Production is in-house in Malaysia, with operations under one roof and a GMP-trained team across quality and operations. Stock is held in Ireland, the Netherlands and Malaysia, supporting flexible ordering aligned to the variable demand profile typical of biologics manufacturing across clinical, scale-up and commercial phases.

Audit policy, SEDEX membership and EcoVadis certification are covered on the pillar page and apply equally here.

FAQs

What's the difference between PPE for biologics and PPE for small-molecule sterile injectables?

The PPE specification for aseptic fill-finish is broadly the same for biologics and small-molecule sterile injectables, with both operating at Grade A within Grade B under EU GMP Annex 1. The wider biologics manufacturing chain involves additional cleanroom-graded operations (upstream and downstream processing) that small-molecule manufacturing does not, requiring non-sterile cleanroom PPE for those stages. Biologics facilities therefore typically use a broader PPE specification than small-molecule sterile injectable facilities.

How do I specify PPE for a multi-product biologics suite?

A single PPE range across all products on a shared line keeps the changeover protocol simple and narrows the supplier qualification scope. Isofield’s Clean Sterile range covers Grade A/B operations across multiple mAb or recombinant programmes on the same gowning specification, with batch-level traceability for the segregation documentation your changeover SOP requires. Speak to the technical team for help sizing the programme to your campaign schedule.

Does Isofield support both sterile and non-sterile cleanroom PPE for biologics?

Yes. The Isofield product range covers both sterile cleanroom PPE for aseptic fill-finish and Grade A/B operations, and non-sterile cleanroom PPE for ISO Class 7 and ISO Class 8 environments used in upstream and downstream bioprocessing. The sterile vs non-sterile distinction is set out in full on [the pillar page FAQ].

What documentation does Isofield provide for biologics supplier qualification?

Isofield provides full validation packs for every product line, current certificates of conformity through the Certificate Finder, and documented change control notifications. The open-book audit policy welcomes end-user audits at the manufacturing site for biologics manufacturers carrying out direct supplier qualification. For the full documentation list, see [the pillar page FAQ on supplier qualification].

Does Isofield supply biosimilar manufacturers?

Biosimilars are biologics manufactured to demonstrate similarity to a reference biologic, and the manufacturing environment, regulatory framework and PPE requirements are equivalent to those of innovator biologics manufacturing. Isofield’s biologics PPE programme applies equally to biosimilar manufacturers.

Get in touch

Speak to the Isofield team about cleanroom PPE for biologics and monoclonal antibody manufacturing, request free samples for evaluation, or download the Isofield Cleanroom Product Catalogue.

Four quick and crucial facts about cleanrooms

Kanya — Tue, 18 Nov 2025 04:36:46 +0000

1. What is a cleanroom?

According to the ISO14644-1 (International Standards Organisation), a cleanroom is a room where the number of airborne particles is controlled and classified and which is designed, constructed and operated in a manner to control the introduction, generation and retention of particles inside the room.[1] In other words, cleanrooms are rooms in which environments are controlled for critical activities.

2. How to determine cleanroom class?

Cleanroom classes are categorized by the number of airborne particles allowed in each room. The less airborne particles present, the cleaner the room. Levels of cleanroom are expressed in terms of an ISO Class, which represents maximum allowable concentrations of particles in a unit volume of air. ^[1]

Table 1 – ISO Classes of air cleanliness by particle concentration

a. All concentrations in the table are cumulative. e.g. for ISO Class 5, the 10,200 particles shown at 0.3 µm include all particles equal to and greater than this size.

b. These concentrations will lead to large air sample volumes for classification. A sequential sampling procedure may be applied; (see [1] page 33).

c. Concentration limits are not applicable in this region of the table due to very high particle concentration.

d. Sampling and statistical limitations for particles in low concentrations make classification inappropriate.

e. Sample collection limitations for both particles in low concentrations and sizes greater than 1 µm make classification at this particle size inappropriate, due to potential particle losses in the sampling system.

f. In order to specify this particle size in association with ISO Class 5, the macroparticle descriptor M may be adapted and used in conjunction with at least one other particle size. (see [1] page 26)

g. This class is only applicable for the in-operation state.

3. What is a cleanroom used for?

Cleanroom environments are highly controlled. The main function of these extremely clean areas is to help manage and mitigate particle contamination generated by people, products and processes. In Life Sciences, cleanrooms are used to produce injectables like vaccines, ingestible like tablets as well as implantable like pacemakers. In short, industries which make pharmaceuticals, medical devices and other biotech products will use a cleanroom as a critical component in their day-to-day working environment.

4. How to control contamination in a cleanroom?

Humans are by far the biggest source of contamination in any cleanroom. Our every movement generates particles. The goal is to always ensure that we do not unnecessarily introduce particles into a cleanroom environment. A large part in controlling particles in environments is through the proper selection of consumables used by personnel working in the cleanroom. Every piece of PPE (Personal Protective Equipment) used must be selected to ensure it minimises the ingress of particles into the Cleanroom. In fact, the EU GMP Annex 1: Manufacture of Sterile Medicinal Products outlines the criteria necessary for the consideration and selection of Cleanroom PPE depending on the classification of the environment [1]

Isofield’s range of PPE consumables are compatible for both ISO Class 4 or ISO Class 5 cleanrooms. Technical reports are available to confirm the cleanliness of our products and are available upon request.

References

[1] “Cleanrooms and associated controlled environments – Part 1: Classification of air cleanliness by particle concentration.” <https://zoser.com.co/wp-content/uploads/2015/10/ISO%2014644-1%20Version%202015.pdf> Accessed July 2, 2021