i told WWB about a result they would not have liked and they did not argue. credit where it is due
lot bought purity assay/label
A-2418 2025-03 99.1% 9.6 / 10mg
A-2601 2025-08 98.7% 9.8 / 10mg
B-0114 2026-01 99.3% 9.4 / 10mg
B-0329 2026-04 98.9% 9.9 / 10mgif the vial has been through a bad transit you are testing the transit as much as the supplier
my sheet has 7 lots from JEEP with a spread under a point, which is tight
assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem
thats within range
how do you post a result so it is actually useful to somebody in a year
sorry to jump in update from 3 months ago: retested the same supplier, result came back better, logged both, i think
is a purity-only test worth the money if underfill is the common failure
whats the lot
for the archive i test roughly every tenth vial. it is a sampling strategy, not paranoia
a point or two between the certificate and an independent result is inside what two labs disagree by