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

[Meta] the batch rule is doing its job and people should stop complaining

COAbranch of 6 comments

Something I noticed reading old threads that I have not seen said out loud. The advice on certificate of analysis in this community changed substantially around the start of last year, and nobody went back and updated the older posts. So depending on which thread the search engine hands you, you get two contradictory…

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6 comments, started 2 years ago
u/wrong_network_w111 points·2 years ago

Titration speed is a side-effect dial far more than an efficacy dial.

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u/laila_yilmaz91 points·2 years ago

Are you looking at area% or net peptide content? Different numbers.

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u/tomas_lehtinen32 points·2 years ago

This is the correct framing. The COA structure matters as much as the number.

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u/cormac_pereira54 points·2 years ago

the method line is doing real work, not just window dressing

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u/nadia_kjaer13 points·2 years ago

axis labels included, always

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u/bastian_moreau0 points·2 years ago

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

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About c/coa

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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