thats a real table
🔥15💀5❤️6
#coa-reading 2026-03-17
Tuesday12 messages6 participantstimes are UTC
Highlights from this day
no lot no certificate
the paperwork can be perfect and the vial can still be light. weigh it, your mileage will differ
i have never seen a research certificate with an endotoxin result on it. not once
right so an identical chromatogram on two different lots is the single biggest tell there is
is there a standard layout or does every lab do their own
weigh the vial
Digest for the week of 2025-12-28 has been published.
Batch lookup G-0641: 5 independent reports on file, earliest 2025-08-16.
coming back after 5 months, has the pinned reading guide changed
👍5
the retention time on this one is different from the last lot, problem
| Line | Claims | Does not claim |
|---|---|---|
| Purity (area %) | fraction of detected material that is the target | how many mg are in the vial |
| Assay / content | mg of target per vial | that it is sterile |
| Water content | mass fraction that is water | anything about purity |
| Counterion | salt form and its mass share | net peptide unless stated |
| Related substances | what else was seen | what was not looked for |
unrelated but a lab that reports "greater than 98%" rather than a number is telling you they did not integrate carefully
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