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#test-results 2024-12-03

Tuesday17 messages2 participantstimes are UTC
Highlights from this day
  • acetate_ash — my read after three years of this: purity is mostly fine across the market and fill consistency is where suppliers differ, i have it written down somewhere 13:42
  • acetate_ash — i told FGP about a result they would not have liked and they did not argue. credit where it is due 14:12
  • monoisotopic — assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem, n of 1 obviously 14:47
  • monoisotopic — anyone tested the same lot twice at different labs 16:48
AA

my read after three years of this: purity is mostly fine across the market and fill consistency is where suppliers differ, i have it written down somewhere

AA

i told FGP about a result they would not have liked and they did not argue. credit where it is due

MO

assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem, n of 1 obviously

MO

a supplier disputing a result is rare here and it has never gone well for the supplier, anyway

thats not great

AA

a point or two between the certificate and an independent result is inside what two labs disagree by

AA

coming back to this the widest spread in my data is about 2.6 percentage points across five lots from one supplier, thats just me

whats the lot

MO

how do you post a result so it is actually useful to somebody in a year

whats the underfill rate people are actually seeing

anyone tested the same lot twice at different labs

👍6📉1

log the boring ones

a single sample tells you about a single vial. that is genuinely all it tells you

log the lot number

peptidemeter-summary-b-0329.pdf
2 pages · 909 KB · not retained in the public archive

if you are testing to settle an argument you will not settle it with n of 1