Professional production of drinking water requires sophisticated purification. Chlorite, chlorate, and the carcinogenic bromate are by-products that are formed during the disinfection process. Their determination in the presence of the standard anions is regulated by various standards and norms, among them US-EPA 300.1 A and B, ASTM D6581-12, and DIN EN ISO 10304-4-1999.

These standards and norms all describe ion chromatography as the analytical method of choice.

Metrosep A Supp 7 – the Preferred Column for Drinking Water Purification

Metrohm offers the Metrosep A Supp 7 – 250/4.0 as the preferred column for this application. This column excels by its outstanding separation of the oxohalides in very low concentrations from the standard anions, which may be present in the mg/L range.

Besides the oxohalides, the Metrosep A Supp 7 also enables ...

  • The determination of organic acids such as glycolate, acetate, formiate, malonate, succinate, and oxalate.
  • Gradients to optimize applications.
  • Fast determination of thiosulfate, thiocyanate, and perchlorate.

Did you know that all Metrohm columns ...

  • Can be used with instruments from third party manufacturers as well.
  • Offer a wide choice of different lengths and capacities, depending on your application.
  • Record the number of injections and working hours of each column.
  • Can be used with organic modifiers such as acetone, acetonitrile, and methanol.
  • Offer robust Swiss Quality for a long column life.