Sulfate in citric acid

Application Update 157 Using a Reagent-Free™ Ion Chromatography System to Monitor Trace Anion Contamination in the Extracts of Electronic Components Introduction Dionex Application Note 153 (AN153) showed that ion chromatography (IC) successfully determines low µg/L and, for some analytes, high…

APPLICATION NOTE 72438 Determination of organic acids in animal feeds using two ion chromatography methods Authors Jingli Hu and Jeffrey Rohrer Thermo Fisher Scientific Sunnyvale, CA Goal To quantify organic acids in animal feeds by both anion-exchange and ionexclusion ion…

Lillian Chen, Brian De Borba, and Jeffrey Rohrer Thermo Fisher Scientific, Sunnyvale, CA, USA Key Words Dionex IonPac AS11-HC-4 µm Column, Suppressed Conductivity, Grape Juice, Apple Juice, Pomegranate Juice Introduction Organic acids play important roles in juices and wines because…

Application Note 116 Quantification of Anions in Pharmaceuticals INTRODUCTION The United States Food and Drug Administration (U.S. FDA)1–3 and regulatory agencies in other countries require that pharmaceutical products be tested for composition to verify their identity, strength, quality, and purity,…