the font on this one changes halfway down, am i being paranoid
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#coa-reading 2026-02-15
Sunday14 messages2 participantstimes are UTC
Highlights from this day
- ten_of_ten — the font on this one changes halfway down, am i being paranoid 16:08
- no_escrow_nate — one decimal versus two is usually just house style, not precision 16:10
- no_escrow_nate — no lot number, no certificate. a document you cannot tie to the vial in your hand is decoration, for what its worth if the certificate date precedes the lot date,… 16:11
- no_escrow_nate — is endotoxin ever tested on research material 16:13
- no_escrow_nate — an identical chromatogram on two different lots is the single biggest tell there is 16:23
test it yourself
one decimal versus two is usually just house style, not precision
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no lot number, no certificate. a document you cannot tie to the vial in your hand is decoration, for what its worth
if the certificate date precedes the lot date, ask. sometimes it is sloppiness and sometimes it is not
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is endotoxin ever tested on research material
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i keep every certificate in a dated folder and compare them. two suppliers had not changed their template since 2019
an identical chromatogram on two different lots is the single biggest tell there is
medutest-report-sg-1177.pdf
3 pages · 138 KB · not retained in the public archive
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
follow up the certificate from JEEP is the one i use to teach this because it actually has a populated impurity table, anyway
is a supplier certificate worth anything on its own
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tfa or acetate, how do i tell from the paperwork
water content is why an honest 10mg vial assays at 9.1. karl fischer titration, and most certificates omit it, still working it out
thats the counterion
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how do you verify a certificate is actually from the lab it says