
Liquid chromatography–ion mobility spectrometry–high-resolution mass spectrometry (LC–IMS–HRMS) shows elephant seal pups carry more PFAS than their mothers do.
This white paper explores L/dp ratio for pharmacopeia allowable adjustments. It considers efficiency, explaining why L/dp ratio can be used as a proxy for efficiency, and illustrates the allowable adjustments through reviewing at a selection of different monographs.





