This is my second independent submission on material from the same supplier.
Somebody stated this to me confidently and I would like to check it before repeating it.
I would accept a well-reasoned negative answer over a poorly sourced positive one.
Is this actually true, and what is the evidence?
Aggregated, published test results and vendor ratings built from submitted batches. Methodology stated, dataset browsable, no listing fees.
Browse resultsAsk PeptideStack is a static archive. Posting is closed, but the norms are worth stating: answer the question that was asked, show your working, cite the trial or the certificate, and say plainly where the evidence runs out.