Every certificate of analysis makes the same promise: that an independent laboratory looked at this exact material and measured what is actually in it. That promise is only worth something if you can check it yourself.
The usual failure is not a forged document. It is a genuine report issued for a different batch, or a report that tested one property being presented as though it had tested them all. Both read convincingly on a phone.
Checking takes about two minutes and needs nothing except the vial in front of you and the report that came with it. There are three things to confirm, and they are worth doing in order before the material is used.
What follows is the routine we would want any researcher to run on our own certificates: match the batch against the label, confirm the report with the laboratory that issued it, and then read the handful of figures that decide whether the material is fit for the work. Nothing here is specific to us - it applies to any supplier.
Match the batch
Start from the batch number printed on the vial label and find the identical string on the certificate. Not the compound name and not the date - the batch. A report covering a different lot tells you nothing whatsoever about the material in your hand, however good the numbers on it happen to look at first glance.
- Label batch and report batch match character for character.
- The test date falls after synthesis and before the vial shipped.
- Compound name and fill weight on the report match the label.
Verify with the lab
Every batch we release is analysed by an outside laboratory and the report goes into our open library before the batch is offered for sale. When a certificate reaches you by any other route, treat the laboratory named on it as the source of truth and confirm the report with them directly rather than with whoever sent it.
Check the essentials
A usable certificate answers four questions: what the molecule is, how pure it is, how much of it is in the vial, and whether anything else came along with it. Identity by mass spectrometry, purity by HPLC-UV, net content by weight and a contamination panel. Everything past those four is supporting detail.
