Determination of an Anionic Fluorochemical Surfactant (FC-95) in a Steel Bath

Application Note 119 Determination of an Anionic Fluorochemical Surfactant in a Semiconductor Etch Bath INTRODUCTION Perfluorinated surfactants are used as wetting agents in semiconductor acid etching solutions. Acid etching engraves fine patterns in silicon dioxide. Poor wetting of the wafer…

Application Note 120 Determination of Calcium and Magnesium in Brine INTRODUCTION To prevent membrane poisoning, new membrane technology in chlor-alkali cells requires feed brine that is relatively free of alkaline earth metals. Membrane manufacturers recommend that saturated brines be purified…

Technical Note 44 The Determination of Trace Anions in Concentrated Phosphoric Acid INTRODUCTION EQUIPMENT The determination of trace anions in phosphoric acid is hampered by a large excess of phosphate ion. Chloride determination at 0.1 mg/L (ppm) in 85% (w/w)…

Beverages Applications Notebook Bottled Water Table of Contents Index of Analytes......................................................................................................................................................................... 3 Introduction to Beverages........................................................................................................................................................... 4 UltiMate 3000 UHPLC+ Systems............................................................................................................................................... 5 IC and RFIC Systems.................................................................................................................................................................. 6 MS Instruments........................................................................................................................................................................... 7 Chromeleon 7 Chromatography Data System Software............................................................................................................ 8 Process Analytical Systems and…