no lot number, no certificate. a document you cannot tie to the vial in your hand is decoration
#coa-reading 2024-08-18
Sunday11 messages4 participantstimes are UTC
Highlights from this day
- u100_pat — the honest summary is that a certificate tells you what the supplier says about a lot they chose to test 20:21
- VialBot — Reminder set. I will post here in 7 days. 20:35
- gradient_greg — residual solvents matter more than people think for anything that went through a lot of purification steps update from 26 months ago: started asking every supplier… 21:12
same chromatogram
purity is not assay
the honest summary is that a certificate tells you what the supplier says about a lot they chose to test
mixed fonts and inconsistent kerning in one document is worth a second look, ill dig out the number
retention time shifts between runs are normal. relative retention time is the number to compare
whats the related substances table actually telling me
Reminder set. I will post here in 7 days.
residual solvents matter more than people think for anything that went through a lot of purification steps
update from 26 months ago: started asking every supplier for water content and about half now include it
how do you verify a certificate is actually from the lab it says
thats a tell