How third-party purity testing works

Purity testing answers two questions: is this the compound it claims to be, and how much of the sample is that compound?

High-performance liquid chromatography (HPLC) separates the components of a sample so the main compound can be identified and its purity measured as a percentage. Mass spectrometry confirms the molecular mass, verifying identity.

Beyond identity and purity, ICP-MS screens for heavy-metal contamination and an LAL test screens for bacterial endotoxins. These are premium checks that many suppliers skip — we publish them.

Every method has limits, and a single number never tells the whole story. That is why we publish the full certificate, not just a headline figure.