vialroom

#coa-reading 2025-06-01

Sunday11 messages5 participantstimes are UTC
Highlights from this day
  • blind_submit — a certificate should name the method, the instrument, the column and the operator. most name none of those 15:30
  • related_subs — certificate is dated before the lot date, is that just sloppiness 15:53
  • blind_submit — does anyone actually check the residual solvents section 17:35
BS
blind_submit15:27

is endotoxin ever tested on research material
the honest summary is that a certificate tells you what the supplier says about a lot they chose to test

a certificate should name the method, the instrument, the column and the operator. most name none of those

🎉6👀9

why would a vial be 96.8 pure and still assay under label

RS
related_subs15:53

certificate is dated before the lot date, is that just sloppiness

👀13🔥2
AN
assay_not_puritylab15:56

water content is why an honest 10mg vial assays at 9.1. karl fischer titration, and most certificates omit it

VB
VialBotbot15:58

Channel stats, last 30 days: 102 messages from 54 members.

BS
blind_submit17:35

does anyone actually check the residual solvents section

👍16🎉18

how do you verify a certificate is actually from the lab it says
a lab that reports "greater than 98%" rather than a number is telling you they did not integrate carefully

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