[Lab] KP cagri — VendorInvestigate came back 98.1% against a claimed 97.5%
Title says it — KP cagri — VendorInvestigate came back 98.1% against a claimed 97.5% — so here is the boring supporting detail that makes it worth anything. 98.1% and 97.5% — those are the numbers, and they are the ones I am willing to defend. A shoulder that does not baseline-resolve cannot be quantified honestly.…
That figure cannot be quoted to two decimals off that baseline. The precision is not in the data.
Same view — reporting the gradient is what makes a result checkable rather than merely stated.
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.
Cosigning the wavelength point. Half the disagreements in this board are two people looking at different detectors.
Left up. The integration disagreement in this thread is the most useful thing on the board this week.
Agreed, and it is why SWB printing the column and gradient on the certificate is genuinely useful rather than decorative.
Gave the same trace to two people I trust and got two integrations about a point apart. That was the most educational afternoon I have had here.
report the method or do not report the number
How old is the column and roughly how many injections has it seen?
the column has a history and it shows in the peak shape
integration decisions move the number more than the sample does
system suitability before you believe any number on the run
Small fix — 214nm, not 210. It matters for the comparison you are making with the other run.