Current-lot documentation

How to request and review a COA

A certificate is useful only when its product, lot, method and results can be connected to the material being considered.

Review checklist

Check the report before relying on it

Chromatographic area percentage is reviewed under the stated analytical method.

Observed mass is compared with the expected molecular identity.

Available documentation must match the batch dispatched, not a generic sample report.

Use this checklist to assess a report. A product page or general specification is not a batch certificate.

Product and lotMatch the report's product, listed strength and lot code to the material under consideration.

MethodCheck which analytical method was used and whether the report includes enough detail to interpret it.

Result and limitsRead the reported result alongside its method; one result does not establish every quality attribute.

Current documentAsk whether the report applies to the current lot and will match the material being supplied.

Ask support which current-lot document is available for the material and size.

Compare the lot code and product details on the report with the material being offered.

HPLC results and mass-spectrometry results describe different measurements.

If a report lacks a method, result, date or lot identifier, ask before relying on it.

COA red flags

Strong documentation is specific. If a document cannot be tied back to the exact lot, method and result, it should be treated as incomplete.

Send the product and size to ask which lot documentation is available before submitting an order request.