is anyone tracking results over time in a way they would share
#test-results 2024-09-28
Saturday18 messages5 participantstimes are UTC
Highlights from this day
- endotoxin_ed — one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally 15:50
- group_buy_gwen — for the archive i had a result i am fairly sure was a handling error on my side and i logged it as such, from memory 15:53
- vialkeeper — i told Homopeptide about a result they would not have liked and they did not argue. credit where it is due 15:54
- truncation_tru — the honest limits: hobby chain of custody is weak and any result here should be read with that in mind 16:14
one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally
lot bought purity assay/label
A-2418 2025-03 99.1% 9.6 / 10mg
A-2601 2025-08 98.7% 9.8 / 10mg
B-0114 2026-01 99.3% 9.4 / 10mg
B-0329 2026-04 98.9% 9.9 / 10mghow many lots do you need before you can say anything about a supplier
for the archive i had a result i am fairly sure was a handling error on my side and i logged it as such, from memory
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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
how do you separate batch variance from supplier variance
a point or two between the certificate and an independent result is inside what two labs disagree by
which lab
underfill is more common than impurity. if you only test purity you are testing the less likely failure
how do you post a result so it is actually useful to somebody in a year
is a purity-only test worth the money if underfill is the common failure
weigh it first
my read after three years of this: purity is mostly fine across the market and fill consistency is where suppliers differ
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
the honest limits: hobby chain of custody is weak and any result here should be read with that in mind
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log the lot number