NEN 6480-1982 Water - Titrimetric determination of free and total available chlorine content with iron(ll)ammoniumsulphate and DPD-sulphate as indicator
The standard applies to drinking water, bathing water, water in the boiler company and surface water. Seawater and water types with high bromide or iodide concentrations require special determination methods. Notes 1. Oxidizing compounds such as chlorine dioxide, bromine and ozone interfere with the determinations. The interference caused by ozone, Mn and Cr compounds can be eliminated (see 11). 2. The following components do not interfere with the method if the levels are not higher than stated dis olved oxygen 10 mg/l Cu2"1" 10 mg/l Fe3+ 10 mg/l Mn2+ 0.5 mg/l N02- 0.5 mg /l
NEN 6480-1982 history
1982NEN 6480-1982 Water - Titrimetric determination of free and total available chlorine content with iron(ll)ammoniumsulphate and DPD-sulphate as indicator