Every lot, every certificate.
Search by compound or lot number. Each certificate names its method and its date, and the verify button opens the issuing laboratory's own lookup with the lot already filled in — because a certificate you can only check on the seller's website is not a check.
FOR LABORATORY AND IN-VITRO RESEARCH USE ONLY. Purity is not identity, and neither is a promise of suitability for any purpose.
Our first lots are at the laboratory now. Each one gets identity by mass spectrometry, purity by RP-HPLC, and net content weighed against the label claim. The certificate posts here and on the product page the day its lot clears — never before it exists, and never as a sample from a different batch.
Want the note when the first batch posts? The list below is where that goes out.