Know who is making the claim.
Check the brand’s official domain, published business identity, contact information and current operating status. A directory listing or social-media recommendation is a lead, not independent confirmation of every claim.
Research-use wording describes the supplier’s stated scope. It does not, by itself, establish compliance with every law or platform policy.
Check the actual documentation.
- Can you identify the specific product and its material form?
- Is there an analytical report for the relevant lot, or only a representative report?
- Is the issuing laboratory named, with a way to confirm the record?
- Do methods, units, results and stated specifications describe the same attribute?
- Which questions remain unanswered by the available tests?
Our CoA guide separates identity, purity and content. Ask for missing information rather than treating an unavailable document as an automatic pass or fail.
Separate the locations.
A business can be registered in one country, hold inventory in another, use an analytical laboratory in a third and obtain material from a fourth. Record what each statement actually refers to. Do not infer manufacturing origin from fast shipping, a flag or a testing address.
Read the origin and dispatch guide.
Keep the conclusion proportionate.
Public documentation can make a supplier easier to evaluate. It is not the same as independent product sampling, a factory audit or an endorsement for human use. Where information is incomplete, “not established” is a useful finding.
Our directory is alphabetical and shows attributed disclosures. It does not sell rankings or assign unsupported quality scores.