#test-results 2024-07-03

whats the underfill rate people are actually seeing
the results in this channel skew because people test when they are suspicious. that is selection bias and it is real

while im here does a bad result on one lot condemn the whole supplier

while im here i had a result i am fairly sure was a handling error on my side and i logged it as such
assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem

how do you separate batch variance from supplier variance

selection bias

nice result

Archive lookup: HPLC_Hank first appears in this channel on 2024-02-09.

do the results in this channel skew because people test when suspicious

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

the widest spread in my data is about 2.6 percentage points across five lots from one supplier

posting my VendorInvestigate result on lot D-0718, what do people make of it

thats a fill problem

follow up a point or two between the certificate and an independent result is inside what two labs disagree by, n of 1 obviously

which lab

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

do you test every order or sample it

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

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

my sheet has 8 lots from BCH with a spread under a point, which is tight

update on the earlier thing whats the worst result anyone has logged and what happened next