the three way match is vial, certificate, invoice. if all three agree you have something
Thread · #coa-reading · 2026-03-21
a certificate should name the method, the instrument, the
Spun off from a message in #coa-reading on 2026-03-21. 8 messages, 4 participants.
The message this came from
- no_appetite_nia — a certificate should name the method, the instrument, the column and the operator. most name none of those 15:36
i keep every certificate in a dated folder and compare them. two suppliers had not changed their template since 2019
update from 20 months ago: started asking every supplier for water content and about half now include it
does anyone actually check the residual solvents section
[edited]sterility and endotoxin are separate tests and almost nobody runs either on research material
[edited]good certificate actually
no lot no certificate
i was wrong about this for a year: area percent under-reports nothing, it just answers a different question than assay does