This application note demonstrates the excellent inertness performance of an Agilent J&W DB-Wax Ultra Inert GC column in the analysis of glycols in toothpaste. DB-Wax UI columns provide better column durability and more consistent analytical results compared with other PEG stationary phase GC columns. Agilent 5977B 單四極桿氣質聯(lián)用系統(tǒng)GC/MSD