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DIN EN ISO 23696-1
Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (ISO 23696-1:2023); German version EN ISO 23696-1:2025
DIN EN ISO 23696-2
Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (ISO 23696-2:2023); German version EN ISO 23696-2:2025
EN ISO 23696-1
Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (ISO 23696-1:2023)
EN ISO 23696-2
Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (ISO 23696-2:2023)
ISO 19643
Meat and meat products - Determination of nitrite and nitrate content - Continuous flow analysis (CFA) method
NA 057-01-07 AA
Nitrate, nitrite
CEN/TC 275/WG 7
Nitrate, nitrite
DIN EN 13654-1
Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method; German and English version prEN 13654-1:2025
