DIN Standards Committee Water Practice
DIN EN ISO 23697-1
Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (ISO 23697-1:2023); German and English version prEN ISO 23697-1:2025
Wasserbeschaffenheit - Bestimmung von Gesamt-Stickstoff (TNb) in Wasser mittels Küvetten - Teil 1: Verfahren mit Dimethylphenol (ISO 23697-1:2023); Deutsche und Englische Fassung prEN ISO 23697-1:2025
Responsible national committee
NA 119-09-02 AA - Organic compounds
Responsible european committee
Responsible international committee
ISO/TC 147/SC 2 - Physical, chemical and biochemical methods