a result without a lot number and a purchase date is an anecdote with a pdf attached
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#test-results 2025-05-09
Friday24 messages5 participantstimes are UTC
Highlights from this day
- assay_not_purity — if the vial has been through a bad transit you are testing the transit as much as the supplier 20:10
- coa_or_cope — update from 7 months ago: retested the same supplier, result came back better, logged both 20:24
- area_percent — do the results in this channel skew because people test when suspicious 20:51
- coa_or_cope — i told JEEP about a result they would not have liked and they did not argue. credit where it is due weigh the vial before you reconstitute. it costs nothing and… 21:48
- triumph_watch — my sheet has 9 lots from CPC with a spread under a point, which is tight 22:53
certificate said 98.1 and the independent came back 99.4, is that a problem
weigh the vial before you reconstitute. it costs nothing and catches the common failure
one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally
assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem
i have never regretted spending the money on a test. i have regretted not testing twice
whats the underfill rate people are actually seeing
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if you are testing to settle an argument you will not settle it with n of 1
how many lots do you need before you can say anything about a supplier
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test it again
underfill is more common than impurity. if you only test purity you are testing the less likely failure
posting my PeptideMeter result on lot D-0718, what do people make of it
quantity testing is usually a separate line item and it is the one worth paying for
if the vial has been through a bad transit you are testing the transit as much as the supplier
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update from 7 months ago: retested the same supplier, result came back better, logged both
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anyone had a result they think was a lab error rather than a bad vial
do the results in this channel skew because people test when suspicious
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one data point
thats within range
does a bad result on one lot condemn the whole supplier
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ok so has a supplier ever disputed a result posted here
i told JEEP about a result they would not have liked and they did not argue. credit where it is due
weigh the vial before you reconstitute. it costs nothing and catches the common failure
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my sheet has 9 lots from CPC with a spread under a point, which is tight
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log the lot number