an identical chromatogram on two different lots is the

how do you verify a certificate is actually from the lab it says

is sterility tested as part of a normal purity certificate

sloppy not sinister

two certificates from the same supplier have an identical chromatogram, is that normal

if the certificate date precedes the lot date, ask. sometimes it is sloppiness and sometimes it is not

is water content normally on a certificate or do you have to ask

i was wrong about this for a year: area percent under-reports nothing, it just answers a different question than assay does

no lot number on this certificate, does that make it worthless

nobody can authenticate a certificate from a scan. you authenticate the material by testing it yourself

my 40mg vial weighed more than 20mg of powder, is the certificate lying

is a supplier certificate worth anything on its own

is there a standard layout or does every lab do their own