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OENORM EN ISO 15604
Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen (ISO 15604:2016)
Edition
2019-07-01
OENORM EN ISO 15923-1
Water quality - Determination of selected parameters by discrete analysis systems - Part 1: Ammonium, nitrate, nitrite, chloride, orthophosphate, sulfate and silicate with photometric detection (ISO 15923-1:2013)
Edition
2024-05-01
OENORM EN ISO 20541
Milk and milk products - Determination of nitrate content - Method by enzymatic reduction and molecular-absorption spectrometry after Griess reaction (ISO 20541:2008)
Edition
2008-12-01
OENORM EN 12014-1
Foodstuffs - Determination of nitrate and/or nitrite content - Part 1: General considerations
Edition
1997-10-01
OENORM EN 12014-1/A1
Foodstuffs - Determination of nitrate and/or nitrite content - Part 1: General considerations (Amendment)
Edition
1999-11-01
OENORM EN 12014-2
Foodstuffs - Determination of nitrate and/or nitrite content - Part 2: HPLC/IC method for the determination of nitrate content of vegetables and vegetable products
Edition
2018-01-15
OENORM EN 12014-3
Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
Edition
2005-08-01
OENORM EN 12014-4
Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
Edition
2005-07-01
OENORM EN 12014-5
Foodstuffs - Determination of nitrate and/or nitrite content - Part 5: Enzymatic determination of nitrate content of vegetable-containing food for babies and infants
Edition
1997-10-01
OENORM EN 12014-7
Foodstuffs - Determination of nitrate and/or nitrite content - Part 7: Continuous Flow method for the determination of nitrate content of vegetables and vegetable products after Cadmium reduction
Edition
1998-11-01