The 2022 revision of Annex 1 moved the emphasis from a list of requirements to a documented argument: the contamination control strategy. For a consumables supplier, that changes the conversation. It is no longer enough to send a certificate; the user has to be able to explain why this wipe, this pack and this transfer step belong in the strategy.
The strategy is a document, not a binder
A contamination control strategy describes the sources of contamination, the controls applied to each, and the evidence that the controls work. It covers the facility, the equipment, the people, the utilities and the materials that enter the room. A wipe is one of those materials.
For each consumable, the strategy should answer four questions: what is it made of, what does it release, how is it transferred, and how do you know. The answers come from the supplier for the first two and from the site for the last two.
Supplier evidence moves into scope
The revision makes it clear that outsourced activities and purchased materials are part of the strategy. That means the supplier's quality system, the test methods behind the certificate and the change notification process are all relevant. A supplier who cannot say which method produced a particle count is a gap in the strategy, even if the product performs.
Ask for the test method, the sampling plan and the change clause. Ask what happens when the fibre source changes, and whether the site would be notified before the first affected lot ships. The answers separate a manufacturer from a trader.
Transfer is where strategies fail
A sterile wipe that is opened in a Grade D corridor and carried into a Grade A zone is not a sterile wipe at the point of use. The barrier stack, the airlock sequence and the gloved handling are part of the product's performance, not an operational detail.
Write the transfer step into the procedure, with the number of bags, the point at which each bag is opened and who opens it. Then audit it. The most common finding is not a missing certificate; it is an inner bag opened one room too early.
What inspectors ask for
In practice, the questions are predictable. Show the specification. Show the certificate for the lot in use. Show the change record. Show the deviation that followed the last out-of-specification result, and show what changed as a result. If the consumable is sterile, show the sterility assurance level and the indicator result.
The answers are easier when the specification names a test and the certificate reports the same test. That alignment is the single most useful thing a supplier can provide, and it is the thing most often missing.
Five questions for a supplier this quarter
Which test method produced the particle count on the certificate. What changes would trigger a notification. How the barrier stack is configured for a sterile reference. What the extractable profile is in the process solvent. Who signs the certificate, and whether the signatory is at the manufacturing site.
The answers are short if the supplier owns the process and long if they do not. Either way, they belong in the qualification file, not in an email that gets archived with the quotation.
Does Annex 1 require sterile wipes in Grade A?
It requires that anything entering the critical zone is controlled and does not introduce contamination. In practice that means sterile, low-particle consumables with a validated transfer. The exact choice is justified in the CCS.
Is a supplier audit mandatory?
Not in every case, but the strategy has to show how the supplier's performance is assured. A documented qualification, a questionnaire and a certificate may be enough for a low-risk item; a sterile critical consumable usually warrants more.
How often should consumables be re-qualified?
On change, and periodically according to risk. A conservative starting point is annual review of the documentation and re-test on any change to fibre, converting line or packaging.
