[Lab] split one vial across VendorInvestigate and PeptideMeter — 97.2% and 98.4%
The claim in the title is exactly the claim I am making: split one vial across VendorInvestigate and PeptideMeter — 97.2% and 98.4%. Nothing implied beyond it. Pulling the figures out of the title: 97.2% and 98.4%. All of it is written down as it happened rather than reconstructed. The four things a certificate must…
What does the method line actually say? Not the technique — the column and the gradient.
batch number, date of analysis, method, individual impurities — that is the minimum set
batch number, date of analysis, method, individual impurities — that is the minimum set
gastric_emptying_g has the distinction right — one is a fraction of the detector signal, the other is a fraction of the mass.
gastric_emptying_g has the distinction right — one is a fraction of the detector signal, the other is a fraction of the mass.
This is the sentence to take away. The rest of the thread is footnotes to it.
What does the method line actually say?
Disagree on this specific point. Two honest labs can resolve that impurity differently and report different numbers.
Did you get the chromatogram or only the summary line?
Did you get the chromatogram or only the summary line?
Agreed, and the practical version is: ask for the itemised table. If it exists, you get it.
area% is not mass%, and the difference is the whole game