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, IDT)

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English

Published date

17-12-2025

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Standardiserings-Kommissionen I Sverige

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This document specifies a method for the determination of total bound nitrogen (ST-TNb) in water of various origins: groundwater, surface water, and wastewater, in a measuring range of concentration generally between 0,5 mg/l and 220 mg/l of ST-TNb using the small-scale sealed tube method.

Committee	ISO/TC 147
DocumentType	Standard
Pages	18
PublisherName	Standardiserings-Kommissionen I Sverige
Status	Current

Standards	Relationship
ISO 23697-1:2023	Identical
EN ISO 23697-1:2025	Identical

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SS-EN ISO 23697-1:2025

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, IDT)

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SS-EN ISO 23697-1:2025

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, IDT)

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