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

[Lab] 16th independent test on ERP — 97.4% on a claimed 97.0%, and the trend is the interesting part

Labbranch of 6 comments

Numbers in the title, numbers in the post. 16th independent test on ERP — 97.4% on a claimed 97.0%, and the trend is the interesting part. Since the title puts numbers in the shop window: 97.4% and 97.0%. Gave the same trace to two people I trust and got two integrations about a point apart. That was the most…

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6 comments, started 2 years ago
u/nora_lundgren96 points·2 years ago

reproducibility beats resolution if you only get one of them

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u/hplc_hobbyistruns their own column52 points·2 years ago·edited

Resolution between two peaks depends on retention, selectivity and efficiency. A shallower gradient buys retention and usually resolution, at the cost of peak width and run time.

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u/samir_falk23 points·2 years ago·edited

Resolution between two peaks depends on retention, selectivity and efficiency.

Disagreeing with this bit: that spread is ordinary inter-lab variance, not a disagreement about the material.

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