Annex 1 is not a consumables document. It is a contamination control document, and consumables sit inside it as one of the inputs that has to be controlled. That distinction matters, because it changes what a supplier has to provide and what a manufacturer has to be able to show.
The 2022 revision introduced the contamination control strategy as a formal expectation: a documented, risk-based set of controls that covers the facility, the people, the process and the materials that enter the critical zone. A wipe is one of those materials.
From commodity to controlled input
Under a strategy-led approach, a sterile wipe is not bought; it is qualified. The qualification covers the supplier's quality system, the manufacturing environment, the sterilisation method, the packaging integrity and the traceability of the lot.
For Grade A and B, the relevant questions are predictable:
- Is the item sterile, and what is the sterility assurance level?
- How is it bagged, and how many bags are there to remove at the airlock?
- Can the lot be traced from the batch record to the production record?
- What is the change notification process if the supplier alters a material?
If the answer to any of these is "we will confirm", the item is not qualified, regardless of the certificate on file.
The transfer step is part of the control
Annex 1's emphasis on contamination control makes the transfer process visible. A sterile wipe that is correctly manufactured and incorrectly transferred is a contaminated wipe. The strategy has to describe how the outer bag is removed, where it is removed, who does it, and how the inner bag is disinfected.
This is where double and triple bagging earn their cost. Each layer corresponds to a boundary: outside the classified area, the airlock, and the critical zone. The number of bags should match the number of boundaries, not be chosen for convenience.
Ask an operator to walk you through the transfer aloud, bag by bag. If the sequence has a gap — a bag placed on the floor, a wipe handled with an ungloved hand — the strategy has a hole that no supplier document will fill.
Disinfectant residue and the wipe's second job
The revision also tightened expectations around disinfection and residue. In practice, the wipe has two jobs in a Grade A zone: apply the agent evenly, and remove the residue that the agent leaves behind. A wipe that spreads a quaternary ammonium film without lifting it is doing half the job.
That is why the two-wipe sequence — one with disinfectant, one with water or IPA — appears in so many updated procedures. It also explains why residue data has moved from a nice-to-have to a qualification question.
Supplier qualification, without the theatre
A paper audit that checks boxes is easy to pass and hard to trust. A useful qualification visits three things: the production area, the sterilisation records, and the packaging line. If a site visit is not possible, ask for a video walkthrough and the last two change notifications.
Then check the boring parts. Does the certificate of analysis match the lot on the box? Does the sterility report name the method and the bioburden result? Are the bag dimensions the ones on the drawing? These are the details that fail in an inspection, not the mission statement.
What to write into the specification
A Grade A consumable specification should be short enough to read in a meeting and specific enough to audit. Ours runs to one page: reference, material, size, sterility assurance, bagging configuration, lot marking, change notification, and the name of the person who approved it.
That last field is the one auditors ask about. A specification without an owner is a document that nobody maintains.
Does Annex 1 require sterile wipes in Grade A?
It requires that items entering the critical zone are controlled and do not introduce contamination. In practice, that means sterile, appropriately bagged consumables for direct contact with sterile surfaces.
Is a supplier audit mandatory?
The strategy must be risk-based. A documented qualification, which may include a desk audit plus performance history, can be acceptable for low-risk items. Sterile critical-zone consumables are rarely low risk.
How often should the qualification be reviewed?
On change, and periodically. Annual review is common; a material change by the supplier should trigger a review regardless of the calendar.
Annex 1 does not name a wipe. It asks whether you can explain, in writing, why that wipe is in your Grade A zone and how you know it belongs there. The explanation is the compliance.
