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c/coa·submitted 2 years ago by u/bastian_aalto

[Discussion] can we stop arguing about area percent until somebody posts a number

Discussionbranch of 7 comments

Long-ish post, sorry. tl;dr at the bottom. I have been tracking related substances against eGFR for 29 weeks because I could not find anyone who had. The correlation is weaker than I expected, which is itself mildly interesting given how confidently people link the two in here. Caveats up front: one person, one lab,…

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7 comments, started 2 years ago
u/laila_yilmaz46 points·2 years ago

Strongly agree. Mass% and area% are answering different questions on the same document.

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u/ghrp_history0 points·2 years ago

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

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u/purity_pedantanalytical0 points·2 years ago

chromatogram or it did not happen

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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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