A mixture of water and organic solvents is often used for the mobile phase of HPLC. However, when the dissociation state of the target component changes depending on the pH, the pH should be kept cons...

Thin-layer chromatography (TLC) is a thin layer of silica gel, amino silica gel, alumina, polyamide resin, etc. applied on a glass plate. It is mainly used for simple and rapid confirmation of the pro...

A water and organic solvents is used frequently as an eluate of reverse-phase chromatography. In particular, methanol and acetonitrile are often used as organic solvents. Methanol is cheaper than acet...

"Solid-phase extraction-high performance liquid chromatography method" was added to the measurement method of nonionic surfactants in the Japanese water quality standard items (Notification No. 66 of ...

Wakopak® Wakosil AS-Aqua is a column developed as a HPLC column suitable for the analysis of anionic surfactants (alkylbenzenesulfonates, ABSs hereinafter) in an aqueous solution.