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c/hplc·submitted 4 months ago by u/week_four_wall

France: chromatogram, and what it actually costs here

Labbranch of 7 comments

Something I noticed reading old threads that I have not seen said out loud. The advice on purity 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 answers with the…

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7 comments, started 4 months ago
u/ewan_tulloch63 points·4 months ago

This is the correct method framing. Column and gradient are load-bearing fields.

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u/sig_figs_sammod · analytical40 points·4 months ago

Detection wavelength? LC-MS and that changes at different wavelengths.

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u/lina_novak9 points·4 months ago

This is the correct method framing. Column and gradient are load-bearing fields.

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u/yara_boateng-2 points·4 months ago

Did they post the raw trace or just the summary?

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u/camila_lindqvist75 points·4 months ago

Half-life is about 168 hours, so steady state lands around week 2–5. Practical consequence: what you feel in week 1 is not what that dose does.

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u/hydration_hank54 points·4 months ago

area% and mass% are not the same and this whole post conflates them

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u/ahmed_rasmussen37 points·4 months ago

Slight fix: the number was 97.6, not 99.2. Decimal point, but a fairly consequential one.

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