PNE-EN ISO 23697-2
Withdrawn Standard
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PNE-EN ISO 23697-2

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)
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Publisher Asociacion Espanola de Normalizacion y Certificacion (AENOR)
Publication Date 04/21/2026
Page Count 7
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Weight (in grams) ---
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