the honest limits: hobby chain of custody is weak and any result here should be read with that in mind
coa-kp-0925.pdf
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#test-results 2025-09-09
Tuesday12 messages4 participantstimes are UTC
Highlights from this day
- LC_MS_Lena — the honest limits: hobby chain of custody is weak and any result here should be read with that in mind 13:05
- LC_MS_Lena — my read after three years of this: purity is mostly fine across the market and fill consistency is where suppliers differ, i could be wrong 13:44
- VialBot — New independent result logged — SGN, lot F-1330, purity 99.2% (VendorInvestigate). 13:47
- LC_MS_Lena — does anyone log the negative results, the boring ones 14:38
- vial_ledger — i have never regretted spending the money on a test. i have regretted not testing twice log the boring results too. a channel that only records failures produces a… 15:05
my read after three years of this: purity is mostly fine across the market and fill consistency is where suppliers differ, i could be wrong
anyone had a result they think was a lab error rather than a bad vial
New independent result logged — SGN, lot F-1330, purity 99.2% (VendorInvestigate).
post the lot, the purchase month, the lab, the number, and what you were expecting. that makes it useful later
the widest spread in my data is about 2.6 percentage points across five lots from one supplier, ill dig out the number
thats not great
do you test every order or sample it
does anyone log the negative results, the boring ones
✅6
i test roughly every tenth vial. it is a sampling strategy, not paranoia
i have never regretted spending the money on a test. i have regretted not testing twice
log the boring results too. a channel that only records failures produces a false picture