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c/coa·submitted 1 months ago by u/india_generic_g

identity and quantity are two questions and most COAs answer one

Discussionbranch of 5 comments

Genuinely asking, not being difficult. Everyone in c/scamalerts repeats that area percent is important. I believe it, but I have never seen anyone show why, and when I search I get 13 threads of people agreeing with each other. Is there a paper? Is there a measurement? Or is this one of those things that is true…

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5 comments, started 1 months ago
u/yara_antonsen135 points·1 months ago

Respectfully this is a sample of one presented as a finding.

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u/fatima_wojcik46 points·1 months ago·edited

redact your own name, not the vendor's batch details

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u/yusuf_nakamura37 points·1 months ago·edited

redact your own name, not the vendor's batch details

Disagree on that part. 98.1% and 98.3% on the same vial is normal.

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u/anders_kuusela31 points·1 months ago

Small correction: the trial was 6 weeks, not 39. Does not change your point but people will quote it.

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u/tidy_vialdrawer_pls10 points·1 months ago

post the whole document, not the headline number

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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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