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c/hplc·submitted 2 years ago by u/santiago_villalobos

8 months in and chromatogram is still the thing I get wrong

Explainerbranch of 5 comments

I have had 10 orders now and I keep a table, so here is the honest summary rather than a vibe. Material has been consistent. Communication has not. Shipping has varied by about 32 days on nominally the same lane, which matters more in summer than in February. The independent number came back 98.4% against a claimed…

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5 comments, started 2 years ago
u/salma_vasquez1.5k points·2 years ago

This is the "correlation is mechanism" thing again. You changed three variables at once.

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u/vikram_asante-31 points·2 years ago

a round-robin on baseline integration would be genuinely useful

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u/hplc_hobbyistMOD819 points·2 years ago

Retitled to remove editorialising. Put the evidence in the body.

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u/dead_space_doug500 points·2 years ago

Dead space in the needle hub holds a small but non-trivial volume. On low-volume draws that can be several units.

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u/baseline_drifteranalytical134 points·2 years ago

two labs, two different baselines, two different purity numbers, both honest

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