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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 conce…
Overview SIST EN ISO 23697-2:2026 specifies the method for determining total bound nitrogen (ST-TNb) in water using small-scale sealed tubes and the chromotropic acid colour reaction. This internatio…
Overview EN ISO 23697-2:2025 specifies a standardized laboratory method for the determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes and the chromotropic acid colour…
Overview ISO 23697-2:2023 specifies a laboratory method for determining total bound nitrogen (ST-TNb) in water (groundwater, surface water, wastewater) using small-scale sealed tubes and the chromotr…