
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)
STANDARD published on 28.10.2026
Designation standards: UNE-EN ISO 23697-1:2026
Publication date standards: 28.10.2026
The number of pages: 17
Approximate weight : 51 g (0.11 lbs)
Country: Spanish technical standard
Category: Technical standards UNE