whats the related substances table actually telling me
✅13
#coa-reading 2025-01-26
Sunday18 messages4 participantstimes are UTC
Highlights from this day
- fibre_first — the related substances table is the interesting part. a row of "not detected" means they did not look hard 16:28
- step_one_sian — i keep every certificate in a dated folder and compare them. two suppliers had not changed their template since 2019 16:58
- cold_chain_cmdr — coming back after 23 months, has the pinned reading guide changed 18:14
looks re-dated
the related substances table is the interesting part. a row of "not detected" means they did not look hard
peak RRT area% note
1 0.42 0.31 solvent front
2 0.88 0.44 related substance
3 1.00 98.72 main
4 1.14 0.53 related substancei keep every certificate in a dated folder and compare them. two suppliers had not changed their template since 2019
😂3👀14❤️12
purity is not assay
why would a vial be 98.6 pure and still assay under label
the font on this one changes halfway down, am i being paranoid
right so is endotoxin ever tested on research material
coming back after 23 months, has the pinned reading guide changed
✅18🔥6
is a supplier certificate worth anything on its own
i asked GL Biochem for the method and they sent it. that alone put them ahead of most
sorry to jump in a vial can be 99.4% pure and hold 8.1mg of a 10mg label. both numbers are true and only one of them is the one you care about
sorry to jump in the retention time on this one is different from the last lot, problem
check the lot
🧪8🙏1🤝12
how do you verify a certificate is actually from the lab it says
right so does anyone actually check the residual solvents section
quick one is area percent the same thing as how many mg are in the vial
if you only read one line on a certificate, read the lot number. if you read two, read the assay
sloppy not sinister
🙏10🧪1✅10