A practical checklist for identity, lot traceability, test method, result interpretation and document matching. This guide is for qualified B2B cosmetic buyers and does not replace the supplier specification, safety data or destination-market regulatory review.
Match the certificate to the order
Check product name, internal code, lot or batch number, manufacturing or test date, specification and pack. A COA from another product or an undated template does not support the material being purchased.
Separate identity from purity
A purity result and an identity confirmation answer different questions. Ask which method was used, what the specification is and whether the result applies to the raw peptide, a complex or a finished stock solution.
Review physical and risk-based tests
Appearance, water or moisture, microbiology, heavy metals and other tests depend on material type and risk. A finished water-based serum generally requires a different release approach from a dry peptide material.
Resolve discrepancies before payment
If the quotation, label and COA use different concentration bases or product names, stop and clarify. The final purchase specification should use one consistent identity and unit system.
Buyer action list
- Identify the exact supplied form and product code.
- Request the commercial specification before comparing price.
- Match available documents to the product and batch.
- Test compatibility in the intended formula and package.
- Confirm MOQ, lead time, storage and shipping in writing.
Need a product-specific answer?
Send the material, intended cosmetic format, quantity and destination market.
Ask the B2B Team