Normal phase liquid chromatography assay for vitamin K1 isomers

Application brief | 000578 Liquid chromatography Normal phase liquid chromatography assay for vitamin K1 isomers Authors Goal Katherine Lovejoy and Mauro De Pra Highlight the normal phase capabilities of the Thermo Scientific™ Vanquish™ Core HPLC Thermo Fisher Scientific, Germering, Germany…

Stephen Aspey, Thermo Fisher Scientific, Runcorn, UK Key Words Phylloquinone, phytomenadione, phytonadione, vitamin K1, fat soluble vitamins, comparison of silica phases Abstract Vitamin K1 isomers and related compounds are separated using a silica HPLC column and a normal phase solvent…

TECHNICAL NOTE 73337 Global round robin test of thiopental EP method performance on identical HPLC systems Authors: Sylvia Grosse, Katherine Lovejoy, Frank Steiner Thermo Fisher Scientific, Germering, Germany Keywords: Reproducibility, precision, European Pharmacopoeia, system suitability test, UV-Vis, thiopental, variability, small…

Application note | 003285 Industrial Analysis of various polyaromatic hydrocarbons in diesel fuels using an HPLC-RID system Compliance with both the ASTM standard test method (D6591-19) and the People’s Republic of China standard test method (NB/SH/T 0806-2022) Goal Authors Zheng…