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The method section is present, which is unusual enough that I want to make use of it.
This has the shape of a fact but I cannot find its origin.
What I found instead were three secondary sources all citing each other.
Can anyone point me at a primary source, or confirm that there is not one?
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4Is this purity or content? The question reads as though the two are the same measurement. – Dr_Malik_Osei 3 months ago
5What does the certificate say about the lot code, and does it match the vial? – fib4_reader 4 months ago
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