The documentation that makes a delivery usable — certificates of analysis, method transparency, retained samples and audit access, released with every batch.
Incoming inspection, regulatory filing, and any question asked later.
The receiving plant uses the certificate to release the material into its own process, so the parameters have to match what that plant actually tests. A regulatory filing needs declarations rather than performance figures. And when something goes wrong six months later, the retained sample and the batch record are what make an answer possible. One document serves all three, which is why its content is agreed rather than assumed.
8–14
parameters per CoA
Typical number of released figures on a certificate of analysis.
Every released figure has a method and a sample behind it.
The parameters, the methods and the limits are agreed and frozen, so both laboratories are measuring the same things the same way.
Where the customer laboratory uses a different procedure, results are correlated once at qualification, which prevents a routine disagreement later.
Every batch is tested against the frozen specification and released only when the results sit inside the limits. Deviations are dispositioned, not absorbed.
A sample and the batch record are retained, and made available for audit or for retesting if a question about that delivery ever arises.
The set is chosen against what the receiving organisation has to satisfy.
Per batch · methods named
The released figures for the batch against the agreed specification, with the test method and the limit shown beside each result.
Declarations and data sheets
Safety data sheets and the declarations a market or a customer standard requires, issued in the correct legal name and kept current.
Site access · method correlation
Supplier qualification support: site audit access, method correlation against your laboratory, and the records behind a released batch.
These are agreed at qualification, not at delivery.
The figures reported per batch. The set is agreed to match the receiving plant incoming inspection rather than issued as a default list.
Each result carries the method used, so it can be reproduced by another laboratory and compared meaningfully across suppliers.
The same code appears on the pack, the certificate and the production record, which is what makes traceability work in practice.
Held so a delivery can be retested rather than argued about, and so a field problem can be traced to a specific lot.
Batch records archived for the period the applicable standard requires, and available on audit.
Site audits accommodated on notice, covering process control, laboratory practice and the records behind released batches.
The batch identification, the released parameters with their measured results, the specification limit for each, and the test method used. The parameter set is agreed at qualification so it matches what the receiving plant actually tests.
Because properties like iodine number, hardness and tinting strength are defined by their measurement procedure. Two laboratories using different procedures can report genuinely different numbers for the same material, and neither is wrong.
The retained sample is tested again here, and the methods are compared. Most differences resolve to a procedural variation, which is why methods are correlated once at qualification rather than debated for each delivery.
Samples are retained for the shelf life of the product, and batch records are archived for the period the applicable standard requires. Both are available on audit or when a specific delivery is queried.
Yes, on reasonable notice. Supplier qualification audits covering process control, laboratory practice and batch records are a normal part of setting up supply, and periodic requalification can be scheduled into the agreement.
Send the parameters your incoming inspection tests and the methods behind them, and we will come back with the release set, the correlation plan and the audit route.
