Note: This standard no longer has current versions. The replacing standards are listed at the bottom of this page.See
NEN 6480
Water - Titrimetric determination of free and total available chlorine content with iron(II)ammonium sulphate and I-amino-4-diethyl-aminobenzene hydrogen sulphate (N,N-diethyl-p-phenylenediamine (DPD)-sulphate) as indicator