CEN/TS 17338:2019

Liming materials - Determination of the lime requirement in soil - Ammonium acetate buffer method pH 5,5

Publication date:   Jun 17, 2019

General information

60.60 Standard published   May 1, 2019


CEN/TC 260 Fertilizers and liming materials

Technical Specification

65.080   Fertilizers



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This document specifies a method for the determination of the lime requirement of acid soils to target pH levels at requested time of maintenance as determined by reaction with 0,1 mol/l ammonium acetate pH 5,5.
Due to general soil buffering systems, the method is applicable to all soils which are acid enough to dissociate hydrogen ions from the soil colloid system to depress the pH of the buffer solution.
NOTE 1 The method originates from research in Canada and Norway, see [1] and [2].
NOTE 2 Annex A gives regression equations to predict the maintenance of a range of pH levels at different times after liming in mineral and organic soils in Europe.

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CEN/TS 17338:2019
60.60 Standard published
May 1, 2019