quantity testing is usually a separate line item and it is the one worth paying for
#test-results 2025-10-10
Friday32 messages5 participantstimes are UTC
Highlights from this day
- two_four_ceiling — is it worth testing if the vial has already been through a warm transit 22:51
- rezept_rolf — right so how many lots do you need before you can say anything about a supplier 23:24
- HPLC_Hank — genuine question the honest limits: hobby chain of custody is weak and any result here should be read with that in mind 23:28
whats the lot
when did you buy it
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i told CPC about a result they would not have liked and they did not argue. credit where it is due
if the vial has been through a bad transit you are testing the transit as much as the supplier
anyone had a result they think was a lab error rather than a bad vial
log the lot number
i had a result i am fairly sure was a handling error on my side and i logged it as such
thats within range
attach the pdf
a single sample tells you about a single vial. that is genuinely all it tells you
what interests me is when the gap goes the same direction every time. once is noise, three times is a pattern
a supplier disputing a result is rare here and it has never gone well for the supplier, ymmv
whats the underfill rate people are actually seeing
if you are testing to settle an argument you will not settle it with n of 1
whats the worst result anyone has logged and what happened next
nice result
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i test roughly every tenth vial. it is a sampling strategy, not paranoia
98.1 against a certificate of 98.6 is fine. the same supplier landing low four times in a row is a question
a point or two between the certificate and an independent result is inside what two labs disagree by
update from 8 months ago: retested the same supplier, result came back better, logged both, anyway
one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally
is it worth testing if the vial has already been through a warm transit
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quick one is quantity testing available as a separate thing or bundled
my sheet has 6 lots from WXT with a spread under a point, which is tight
test it again
coming back after 16 months with a follow up result, where do i put it
assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem, i think
my result contradicts the supplier certificate, do i tell them
right so how many lots do you need before you can say anything about a supplier
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a result without a lot number and a purchase date is an anecdote with a pdf attached
genuine question the honest limits: hobby chain of custody is weak and any result here should be read with that in mind
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