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c/coa·submitted 10 days ago by u/tidy_vialdrawer_watch

[Suspicious] identical chromatogram on two different compounds from the same vendor

Suspiciousbranch of 7 comments

Been lurking in c/survodutide for about 14 months and finally have something worth posting. Short version: week 15, 1.7mg, and COA is the bit I still cannot get a straight answer on. I have read the wiki, I have read the last 11 threads, and the answers split roughly down the middle. What I actually want to know is…

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7 comments, started 8 days ago
u/ghrp_history47 points·8 days ago

Dead space in the needle hub holds a small but non-trivial volume. On low-volume draws that can be several units.

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u/milos_vanhecke30 points·8 days ago

Sent one vial to PeptideMeter and VendorInvestigate. 99.0% and 96.8%. Cost me more than the vial did and I would do it again.

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u/low_appetite_lisa25 points·8 days ago

chromatogram or it did not happen

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u/cato_achebe34 points·8 days ago

I am going to push back on this slightly.

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u/soren_zamora26 points·8 days ago

area% is not mass%, and here is exactly why it matters

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u/nadia_kjaer9 points·7 days ago

no "is this good?" without saying what the compound and claimed purity are

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u/tidy_vialdrawer_watchOP32 points·8 days ago

area% is not mass%, and here is exactly why it matters

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