#test-results 2026-05-23

right so what interests me is when the gap goes the same direction every time. once is noise, three times is a pattern
a single sample tells you about a single vial. that is genuinely all it tells you

97.4 against a certificate of 99.2 is fine. the same supplier landing low four times in a row is a question

Channel stats, last 30 days: 73 messages from 14 members.

my sheet has 8 lots from KP with a spread under a point, which is tight, we shall see

quantity testing is usually a separate line item and it is the one worth paying for, for what its worth

slightly off topic but does a bad result on one lot condemn the whole supplier

the honest limits: hobby chain of custody is weak and any result here should be read with that in mind, someone check my working

thats within range

do the results in this channel skew because people test when suspicious
post the lot, the purchase month, the lab, the number, and what you were expecting. that makes it useful later

one data point

update from 8 months ago: retested the same supplier, result came back better, logged both

my result contradicts the supplier certificate, do i tell them
a supplier disputing a result is rare here and it has never gone well for the supplier