is quantity testing available as a separate thing or bundled
#test-results 2025-08-28
- VialBot — Batch lookup H-2814: 3 independent reports on file, earliest 2024-11-04. 21:26
- cricket_or_footy — one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally 22:30
- net_peptide — i told QST about a result they would not have liked and they did not argue. credit where it is due 22:52
Batch lookup H-2814: 3 independent reports on file, earliest 2024-11-04.
a result without a lot number and a purchase date is an anecdote with a pdf attached
if the vial has been through a bad transit you are testing the transit as much as the supplier
my result contradicts the supplier certificate, do i tell them
coming back to this posting my VendorInvestigate result on lot KP-0925, what do people make of it
my vial assayed under label but the purity was fine, which matters more
how do you post a result so it is actually useful to somebody in a year
test it again
post the lot, the purchase month, the lab, the number, and what you were expecting. that makes it useful later
the results in this channel skew because people test when they are suspicious. that is selection bias and it is real
selection bias
log the boring ones
thats not great
thats within range
does anyone log the negative results, the boring ones
one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally
a point or two between the certificate and an independent result is inside what two labs disagree by
a supplier disputing a result is rare here and it has never gone well for the supplier
update from 5 months ago: retested the same supplier, result came back better, logged both
anyone had a result they think was a lab error rather than a bad vial
whats the worst result anyone has logged and what happened next
i told QST about a result they would not have liked and they did not argue. credit where it is due