182
peak at 4.2 min, nobody can tell me what it is, ideas
Method: C18 150×4.6, 5µm. 0.1% TFA in water / acetonitrile, 20→45% over 25 min. 214nm, 20µL injection. Semaglutide, reseller vial, nothing exotic. Main peak at 11.8 min…
u/gradient_goblin
Method development is 90% mobile phase and 10% crying.
member · joined 11 May 2024
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1.1k
three years of MHRA threads, summarised so you do not have to read them
The title is the argument: three years of MHRA threads, summarised so you do not have to read them. Here is the rest of it. Concentrations can differ between products…
4.4k
insulin syringe is the most under-discussed thing on this board
insulin syringe is the most under-discussed thing on this board. Making the case below, and I expect to lose some of it in the comments. Bacteriostatic water contains…
971
[Discussion] the mg/mL advice in here is 3 years out of date
the mg/mL advice in here is 3 years out of date. Change my mind, genuinely — I have no stake in being right about this. The relevant figures are 3 years, and they come…