Product name
Match the full material name to the item you intend to order. Similar names are not the same item.

Buyer verification guide
A certificate of analysis can be useful evidence. It is not a magic stamp. Its value depends on whether it can be connected to the precise product, format and batch in your order.
Do not rely on a logo, a percentage or a file name alone.
Match the full material name to the item you intend to order. Similar names are not the same item.
Match the stated format, amount or presentation to the request. A document for a different format is not a direct match.
Look for a lot or batch identifier, then ask whether it corresponds to the exact item offered.
Check the report date and identifier. A traceable reference is more useful than an unlabeled image.
Read the test name and result context. Identity and purity are different questions; one number cannot answer every question.
Confirm whether the document is available for your particular requested material or batch, not merely an old example.
A report may show a percentage result, but that figure by itself does not tell you which product, format or batch the report belongs to. Read the identifying fields around it. If they do not match the exact request, the number should not be used as proof of that request.
The same applies to polished layouts, a laboratory logo or a generic filename. Those details may make a PDF look official, but they do not establish the connection to the item in front of you.
Not by itself. It is useful only when the product, format and batch details can be matched to the exact item requested.
No. A percentage alone does not identify which item or batch was tested. Check all identifying details and their link to the exact request.
Yes. Ask whether documentation is available for the specific material or batch requested. Its availability must be confirmed for that individual request.
Catalog pages show listed formats and reference prices. Then use the written conversation to confirm the live order details.