#test-results 2025-06-02

how do you separate batch variance from supplier variance
the honest limits: hobby chain of custody is weak and any result here should be read with that in mind

whats the underfill rate people are actually seeing

my read after three years of this: purity is mostly fine across the market and fill consistency is where suppliers differ

coming back after 10 months with a follow up result, where do i put it

whats the lot

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

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

test it again

one data point

update on the earlier thing sample handling on your end absolutely affects it. draw cleanly, ship fast, do not let it sit warm, your mileage will differ

weigh the vial before you reconstitute. it costs nothing and catches the common failure

i test roughly every tenth vial. it is a sampling strategy, not paranoia

99 against a certificate of 96.8 is fine. the same supplier landing low four times in a row is a question

what interests me is when the gap goes the same direction every time. once is noise, three times is a pattern

weigh it first