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Single comment threadYou are looking at one branch of my TSH moved and I cannot work out whether area percent is why — 33 comments in the full submission. View in context.
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c/coa·submitted 7 months ago by u/receptor_bias_rick

my TSH moved and I cannot work out whether area percent is why

Suspiciousbranch of 6 comments

Quick one. Canada here. certificate of analysis works very differently where I live than in the threads that dominate the front page, and I keep seeing people confidently given advice that simply does not apply outside the US. Specifics: the route I used took 8 weeks and cost roughly what I expected. The admin was…

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6 comments, started 7 months ago
u/step_therapy_s10 points·7 months ago

Yeah, 96.8% area is not the problem, the missing impurity breakdown is the problem.

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u/tuva_aalto3 points·7 months ago

Not to be pedantic but batch and purity are being used interchangeably and they are not interchangeable in real life.

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u/valeria_karlsen2 points·7 months ago

the counterion is part of the mass you paid for

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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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