
Water quality — Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes. Chromotropic acid colour reaction.
NORMA vydaná dňa 22.12.2025
Designation standards: BS EN ISO 23697-2:2025
Publication date standards: 22.12.2025
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: British technical standard
Kategória: Technické normy BS
ISBN: 978 0 539 37111 6 Status: Definitive