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Single comment threadYou are looking at one branch of someone explain chromatogram to me like I have not read a paper in years — 57 comments in the full submission. View in context.
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c/hplc·submitted 1 months ago by u/vikram_asante

someone explain chromatogram to me like I have not read a paper in years

Methodbranch of 7 comments

chromatogram. That is the whole post, but I will justify it. Everything else people worry about in c/reconstitution is downstream of it. Titration speed, early fullness, the endless dose arguments — most of it resolves if you sort chromatogram out first, and almost nobody does. I say this having got it wrong for 23…

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7 comments, started 1 months ago
u/marit_mensa36 points·1 months ago

chromatogram or it did not happen

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u/lina_novak15 points·1 months ago

Did they post the raw trace or just the summary?

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u/valeria_cardoso7 points·1 months ago

integration decision on a shoulder changes your number by half a point on its own

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u/kofi_ferreira10 points·1 months ago

co-elution is real and purity is usually not enough to resolve it

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u/yara_boateng21 points·1 months ago

Not convinced. The evidence does not support that reading.

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u/adaeze_batista14 points·1 months ago

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

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u/arne_nyberg30 points·1 months ago

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

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About c/hplc

The analytical deep end: RP-HPLC methods, gradient design, integration decisions, LC-MS confirmation, amino-acid analysis, water content, and why two labs can report 98.1% and 96.4% on the same vial and both be right. Post the chromatogram, not the summary line.

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  1. Chromatogram or it did not happen. Axis labels included.
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