how do you post a result so it is actually useful to somebody in a year
#test-results 2025-04-19
Saturday25 messages7 participantstimes are UTC
Highlights from this day
- factory_direct_fi — a point or two between the certificate and an independent result is inside what two labs disagree by 15:49
- lead_time_lars — i had a result i am fairly sure was a handling error on my side and i logged it as such 16:38
- provincial_pat — certificate said 99 and the independent came back 98.6, is that a problem 17:16
coming back to this does anyone log the negative results, the boring ones
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a point or two between the certificate and an independent result is inside what two labs disagree by
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i told Homopeptide about a result they would not have liked and they did not argue. credit where it is due, your mileage will differ
update from 13 months ago: retested the same supplier, result came back better, logged both, happy to be corrected
anyone had a result they think was a lab error rather than a bad vial
post the lot, the purchase month, the lab, the number, and what you were expecting. that makes it useful later
log the boring ones
i had a result i am fairly sure was a handling error on my side and i logged it as such
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one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally
factory_direct_fia point or two between the certificate and an independent result is inside what two…
quick one my sheet has 5 lots from WXT with a spread under a point, which is tight
certificate said 99 and the independent came back 98.6, is that a problem
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a single sample tells you about a single vial. that is genuinely all it tells you
coming back to this how do you separate batch variance from supplier variance
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my result contradicts the supplier certificate, do i tell them
whats the lot
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Recon calculator: 10mg in 5ml = 5mg/ml.
what interests me is when the gap goes the same direction every time. once is noise, three times is a pattern
attach the pdf
assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem, anyway
anyone tested the same lot twice at different labs
thats within range
quantity testing is usually a separate line item and it is the one worth paying for
coming back to this posting my VendorInvestigate result on lot A-2601, what do people make of it
unrelated but how many lots do you need before you can say anything about a supplier