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ISO 14255:1998
M00009127
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ISO 14255:1998 Soil quality - Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soil using calcium chloride solution as extractant
standard by International Organization for Standardization, 05/01/1998
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This International Standard describes a method for the determination of soluble nitrogen fractions (nitrate, nitrite, ammonium and organic nitrogen) in a 0,01 mol/l calcium chloride extract of soil samples.
It is applicable to air-dry soil samples, pretreated in accordance with ISO 11464.