weigh the vial
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 / 10mg📈3
#coa-reading 2025-04-01
Tuesday11 messages5 participantstimes are UTC
Highlights from this day
- quiet_head_qi — tfa counterion runs higher by mass than acetate. if the certificate does not say, you cannot do the mass balance 14:34
- one_variable — quick one residual solvents matter more than people think for anything that went through a lot of purification steps 15:06
- travel_cooler — a supplier certificate on its own is a starting point, not evidence. that is the whole reason the verification channel exists 15:41
- net_peptide — i keep every certificate in a dated folder and compare them. two suppliers had not changed their template since 2019, i have it written down somewhere nobody can… 15:42
a lab that reports "greater than 98%" rather than a number is telling you they did not integrate carefully
no lot number on this certificate, does that make it worthless
tfa counterion runs higher by mass than acetate. if the certificate does not say, you cannot do the mass balance
sloppy not sinister
[edited]thats the counterion
quick one residual solvents matter more than people think for anything that went through a lot of purification steps
a supplier certificate on its own is a starting point, not evidence. that is the whole reason the verification channel exists
i keep every certificate in a dated folder and compare them. two suppliers had not changed their template since 2019, i have it written down somewhere
nobody can authenticate a certificate from a scan. you authenticate the material by testing it yourself
📉16
thats a real table
the three way match is vial, certificate, invoice. if all three agree you have something