genuine question about HPLC that I am slightly embarrassed to ask
Question in the title, detail here: genuine question about HPLC that I am slightly embarrassed to ask. MKM sent me the column, the gradient and the theoretical mass without being asked. That is a short list and they are on it. Started reporting my own integrations with the baseline choice stated. Arguments in my…
Area percent is the integrated area of your peak over the total integrated area at one wavelength on one gradient. Change any of those and the number changes without the sample changing.
Yes. Retention time is a hypothesis about identity. Mass is the answer.
system suitability before you believe any number on the run
you cannot report to two decimals off that baseline
reproducibility beats resolution if you only get one of them
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a blank injection between samples costs four minutes and settles most arguments
Agreed, and it is why CPC printing the column and gradient on the certificate is genuinely useful rather than decorative.
Agreed. Two analysts, one trace, two integration choices, and a spread that has nothing to do with the vial.
That figure cannot be quoted to two decimals off that baseline. The precision is not in the data.
Disagree. Inter-lab spread of a point or two on this assay is ordinary and calling it a discrepancy misleads people.