#vendor-verification 2026-03-07

the point of the standard is that it applies to suppliers we like as well as ones we do not, thats one data point

the lot number on the certificate does not match my vial, what now

New independent result logged — WWB, lot D-0718, purity 98.1% (PeptideMeter).

post the photos

Reminder set. I will post here in 9 days.

lot number or nothing

refresh on evidence

i have a result but i did not buy the lot myself, does that count

what actually counts as evidence for a verification

i have watched this standard hold for three years including when it was inconvenient for a popular supplier
what does not count: the supplier certificate alone, a screenshot, a referral link, or a friend who says it was fine

verification is not a recommendation. it means the evidence standard has been met, nothing more

nothing gets deleted from the log, including our own mistakes

if you want to help, buy a lot, test it, and post the report with the lot number. that is the whole contribution

why is a referral link disqualifying rather than just ignored

pattern not one result

a supplier improving shows in the log as later entries, not as earlier entries being edited

how does a supplier get verification revoked

thats not evidence

what does not count: the supplier certificate alone, a screenshot, a referral link, or a friend who says it was fine

not a recommendation

never for sale

nothing gets deleted

a good result with bad sample handling gets logged with a note about the handling. context is part of the record

Recon calculator: 2mg in 2ml = 4mg/ml.

how many independent results does a supplier need

a lot number mismatch between the vial and the certificate is a serious finding. post it with photos of both

has anyone ever offered to pay for verification
we have never revoked on a single result. we have revoked on a pattern