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c/hplc·submitted 11 months ago by u/valeria_cardoso

does purity actually matter or is it forum lore at this point

Methodbranch of 8 comments

chromatogram. That is the whole post, but I will justify it. Everything else people worry about in c/dosinglogs is downstream of it. Titration speed, muscle cramps, 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 10…

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8 comments, started 11 months ago
u/sofia_petrescu65 points·11 months ago

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

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u/honest_syringe_pls24 points·11 months ago

chromatogram or it did not happen

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[deleted]27 points·11 months ago

[deleted]

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u/endotoxin_elliemicro45 points·11 months ago

Yeah, the chromatogram profile matters more than the headline number.

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u/arne_nyberg11 points·11 months ago

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

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u/aksel_palacios28 points·11 months ago

Not to be pedantic but gradient and integration are being used interchangeably and they are not interchangeable in real life.

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u/marit_mwangi16 points·11 months ago

Not to be pedantic but gradient and integration are being used interchangeably and they are not interchangeable in real life.

Adding to this: method development is doing more work than the comment implies.

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u/medutest_mel7 points·11 months ago

Not to be pedantic but gradient and integration are being used interchangeably and they are not interchangeable in real life.

Yes, exactly this, and it is the bit that took me 34 weeks to accept.

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