Insights
Notes on buying
and checking.
Three guides on the parts of this trade that are hardest to verify from a website: what a certificate actually says, how the production route changes the paperwork, and how to check a supplier before the first order.
Insights · Guide
How to read a peptide COA
Purity, net peptide content, counter-ion, water — the four numbers that decide what is actually in the vial, and the lines a good certificate of analysis states separately.
Read the guide 02Insights · Sourcing
Fermented or synthetic?
What actually differs between fermentation-derived and synthetic actives — impurity profile, documentation burden and cost — and the questions that separate the two in a quotation.
Read the guide 03Insights · Due diligence
Verifying a supplier
A 30-minute sequence for checking a peptide supplier before the first order: licence and scope, lot-level COA, sample-to-bulk consistency, third-party testing and payment terms.
Read the guideCatalogue
101 products,
each with a code.
Everything in these guides is applied on our own product pages — the specification tables, the COA notes and the declaration lists.