which lab
#test-results 2025-05-08
Thursday18 messages7 participantstimes are UTC
Highlights from this day
- crimp_top — post the lot, the purchase month, the lab, the number, and what you were expecting. that makes it useful later, ask me again in a month 21:10
- crimp_top — does a bad result on one lot condemn the whole supplier 21:31
- blind_submit — quick one underfill is more common than impurity. if you only test purity you are testing the less likely failure, thats one data point 21:34
- secretagogue_sy — weigh the vial before you reconstitute. it costs nothing and catches the common failure 22:02
anyone tested the same lot twice at different labs
coming back to this is it worth testing if the vial has already been through a warm transit
assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem
when did you buy it
while im here i have never regretted spending the money on a test. i have regretted not testing twice
sorry to jump in i told CPC about a result they would not have liked and they did not argue. credit where it is due
one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally
i had a result i am fairly sure was a handling error on my side and i logged it as such
post the lot, the purchase month, the lab, the number, and what you were expecting. that makes it useful later, ask me again in a month
👀16
does a bad result on one lot condemn the whole supplier
📈15🎉5
has a supplier ever disputed a result posted here
quick one underfill is more common than impurity. if you only test purity you are testing the less likely failure, thats one data point
📈18😂1
weigh the vial before you reconstitute. it costs nothing and catches the common failure
📈11
while im here is quantity testing available as a separate thing or bundled
how many lots do you need before you can say anything about a supplier
96.8 against a certificate of 99.4 is fine. the same supplier landing low four times in a row is a question
sample handling on your end absolutely affects it. draw cleanly, ship fast, do not let it sit warm
[edited]⚠️4📈2
is a purity-only test worth the money if underfill is the common failure