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Overview ISO 23697-1:2023 specifies a laboratory method for the determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes and the dimethylphenol colour reaction. The proc…
Overview EN ISO 23697-1:2025 addresses the determination of total bound nitrogen (ST-TNb) in water using the small-scale sealed tube method, specifically with the dimethylphenol colour reaction. Deve…
Overview SIST EN ISO 23697-1:2026 addresses the determination of total bound nitrogen (ST-TNb) in water using the small-scale sealed tube method, specifically with the dimethylphenol colour reaction.…
1 Scope This document specifies a method for the determination of total bound nitrogen (ST-TN b ) in water of various origins: groundwater, surface water, and wastewater, in a measuring range of conc…
