coming back to this does anyone actually check the residual solvents section
#coa-reading 2026-06-02
Tuesday17 messages5 participantstimes are UTC
Highlights from this day
- triple_ag_tom — a lab that reports "greater than 98%" rather than a number is telling you they did not integrate carefully 15:22
- truncation_tru — is area percent the same thing as how many mg are in the vial 16:58
- protein_floor — the retention time on this one is different from the last lot, problem 16:59
- VialBot — Reminder for sharps_bin_sid: dose day is today. Set 2 days ago. 19:37
my 20mg vial weighed more than 2mg of powder, is the certificate lying
a lab that reports "greater than 98%" rather than a number is telling you they did not integrate carefully
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test it yourself
should a certificate say which instrument and method they used
Purity check: no report on file for lot G-0641. Nothing logged either way.
coming back to this water content is why an honest 10mg vial assays at 9.1. karl fischer titration, and most certificates omit it
weigh the vial
thats a tell
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is area percent the same thing as how many mg are in the vial
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the retention time on this one is different from the last lot, problem
lot bought purity assay/label
A-2418 2025-03 99.1% 9.6 / 10mg
A-2601 2025-08 98.7% 9.8 / 10mg
B-0114 2026-01 99.3% 9.4 / 10mg
B-0329 2026-04 98.9% 9.9 / 10mgnot evidence on its own
if the certificate date precedes the lot date, ask. sometimes it is sloppiness and sometimes it is not
looks re-dated
not detected means nothing
ask for water content
Reminder for sharps_bin_sid: dose day is today. Set 2 days ago.
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