the results in this channel skew because people test when they are suspicious. that is selection bias and it is real, ymmv
#test-results 2024-04-13
Saturday21 messages5 participantstimes are UTC
Highlights from this day
- LC_MS_Lena — the results in this channel skew because people test when they are suspicious. that is selection bias and it is real, ymmv 14:34
- chlorhex — one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally, ymmv 14:45
- tarpit_tam — assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem 14:56
- tarpit_tam — does a bad result on one lot condemn the whole supplier a supplier disputing a result is rare here and it has never gone well for the supplier 17:20
- tarpit_tam — posting my PeptideMeter result on lot G-0641, what do people make of it if you are testing to settle an argument you will not settle it with n of 1 17:21
the honest limits: hobby chain of custody is weak and any result here should be read with that in mind
one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally, ymmv
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selection bias
a point or two between the certificate and an independent result is inside what two labs disagree by, n of 1 obviously
assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem
what interests me is when the gap goes the same direction every time. once is noise, three times is a pattern
underfill is more common than impurity. if you only test purity you are testing the less likely failure, we shall see
thats a fill problem
is anyone tracking results over time in a way they would share
which lab
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if you are testing to settle an argument you will not settle it with n of 1, take that with a pinch of salt
is it worth testing if the vial has already been through a warm transit
weigh it first
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does a bad result on one lot condemn the whole supplier
a supplier disputing a result is rare here and it has never gone well for the supplier
posting my PeptideMeter result on lot G-0641, what do people make of it
if you are testing to settle an argument you will not settle it with n of 1
has a supplier ever disputed a result posted here
whats the worst result anyone has logged and what happened next
does anyone log the negative results, the boring ones
do the results in this channel skew because people test when suspicious