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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 4 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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4 comments, started 8 days ago
u/alcohol_aversion156 points·8 days ago

This is the "correlation is mechanism" thing again. You changed three variables at once.

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u/reflux_report-28 points·8 days ago

the batch number or it did not happen

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u/amira_dumitru-33 points·8 days ago

Batch number and date of analysis? Both are load-bearing.

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u/rania_okonkwo1 point·8 days ago

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

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How to read a certificate of analysis and what it does and does not tell you. Area% versus mass%, identity versus quantity, water content, related substances, acetate counterions, and the difference between a vendor-supplied COA and an independent test on the vial you actually received.

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