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c/hplc·submitted 3 months ago by u/phase_two_pete

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

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does HPLC actually matter or is it forum lore at this point. I am not trying to be the "source?" guy. I would just like a source. System suitability — repeat injections, tailing factor, plate count, RSD on area — is what tells you the instrument was fit for the measurement that day. Without it, the purity figure is…

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7 comments, started 3 months ago
u/amara_haddad62 points·3 months ago

Agreed, and it is why WWB printing the column and gradient on the certificate is genuinely useful rather than decorative.

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u/ewan_zielinski-23 points·3 months ago

area percent is relative to what the detector saw and nothing else

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u/sig_figs_sammod · analytical1 point·3 months ago

area percent is relative to what the detector saw and nothing else

ewan_zielinski is right — the integration choice is a decision and it should be stated alongside the result.

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u/nora_lundgren51 points·3 months ago

system suitability before you believe any number on the run

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u/two_mil_or_one30 points·3 months ago

system suitability before you believe any number on the run

Adding one practical thing — run the blank. It answers this before anyone has to argue about it.

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u/clara_danquah20 points·3 months ago

a shoulder is not an impurity until you can resolve it

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u/sofia_petrescu7 points·3 months ago

axis labels or the trace is decoration

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