Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (ISO 23697-2:2023)

Draft standard

OENORM EN ISO 23697-2:2025-09-01 - Draft

Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (ISO 23697-2:2023)

German title
Wasserbeschaffenheit - Bestimmung von Gesamt-Stickstoff (TNb) in Wasser mittels Küvetten - Teil 2: Verfahren mit Chromotropsäure (ISO 23697-2:2023)
Publication date
2025-09-01
Original language
German
Pages
16

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Publication date
2025-09-01
Original language
German
Pages
16

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