[Lab] 10th independent test on ERP — 97.2% on a claimed 97.0%, and the trend is the interesting part
10th independent test on ERP — 97.2% on a claimed 97.0%, and the trend is the interesting part. That is the headline. The document, the batch and the service are below so you can argue with the method rather than with me. To save the first four comments: 97.2% and 97.0%. Asked for the storage condition behind the…
Area percent is the peak area of your compound over the total integrated area, at one wavelength, on one gradient. It is a relative measure of what the detector saw, not a mass fraction of the vial.
Spent four months confusing area% and mass% in every post I made here. One explainer thread and it clicked permanently.
the related substances line is where the story is
Area percent or net peptide content? They answer different questions.
Agreed on asking for the storage condition. It is one line and it changes how you read the entire stability claim.
Pushing back a little: a missing field is usually presentation, not concealment. Ask for the full document before drawing conclusions.
net peptide content and purity are two different numbers on the same vial
identity and quantity are two questions and most documents answer one