sterility and endotoxin are separate tests and almost nobody runs either on research material
#coa-reading 2026-03-10
Tuesday12 messages3 participantstimes are UTC
Highlights from this day
- area_percent — retention time shifts between runs are normal. relative retention time is the number to compare, i could be wrong 22:10
- area_percent — purity is what fraction of the contents is the target. assay is how many mg are actually there. different questions 22:29
- area_percent — residual solvents matter more than people think for anything that went through a lot of purification steps 22:54
- area_percent — water content is why an honest 10mg vial assays at 9.1. karl fischer titration, and most certificates omit it 22:56
thats a real table
janoshik-a-2601.pdf
2 pages · 174 KB · not retained in the public archive
my 5mg vial weighed more than 5mg of powder, is the certificate lying
thats the counterion
tfa or acetate, how do i tell from the paperwork
retention time shifts between runs are normal. relative retention time is the number to compare, i could be wrong
is area percent the same thing as how many mg are in the vial
🤝1
purity is what fraction of the contents is the target. assay is how many mg are actually there. different questions
🙏14✅1😂7
certificate is dated before the lot date, is that just sloppiness
residual solvents matter more than people think for anything that went through a lot of purification steps
water content is why an honest 10mg vial assays at 9.1. karl fischer titration, and most certificates omit it
right so how do you verify a certificate is actually from the lab it says