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c/coa·submitted 6 months ago by u/bastian_moreau

what would you tell week-1 you about purity

Labbranch of 6 comments

Quick one. Canada here. related substances 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 19 weeks and cost roughly what I expected. The admin was worse…

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6 comments, started 6 months ago
u/milos_trevino5 points·6 months ago

Disagree. What you are describing is consistent with batch, not with what you concluded.

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u/valeria_girard-3 points·6 months ago

post the whole document, not the headline number

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u/neha_erdogan1 point·6 months ago·edited

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

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u/honest_syringe241 point·6 months ago

Small correction: the trial was 3 weeks, not 14. Does not change your point but people will quote it.

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u/wanjiru_varga1 point·6 months ago

Small correction: the trial was 3 weeks, not 14.

Disagree on that part. 93.7% and 99.3% on the same vial is normal.

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u/isabela_nilsen1 point·6 months ago

PDF metadata is checkable in fifteen seconds

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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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  1. Post the full document. Cropped COAs that hide the batch number or date get removed.
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