Wako Blog

We introduce a wide range of topics of research, technical reports, tips on experiments and so on.

Analytical Chemistry

Analytical Chemistry Technical Report

How to select elemental standard solutions according to the purpose

Elemental impurities are analyzed not only in electronic materials but also in a wide range of areas including pharmaceuticals, foods, and environment (water and soil, etc.). It is very important to e...

Analytical Chemistry

[Chromatography Q & A] Differences between silica gel plate and amino silica gel plate used in thin-layer chromatography (TLC)

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...

Analytical Chemistry

[Chromatography Q & A] What is a difference in use of acetonitrile and methanol, which are used frequently in reverse-phase HPLC analysis?

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...

Analytical Chemistry

[Chromatography Q & A] HPLC columns for nonionic surfactants analysis

"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 ...

Analytical Chemistry

[Chromatography Q & A] What are the differences between Wakopak® Wakosil AS-Aqua for anionic surfactant analysis and ODS columns?

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.

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