This European Standard specifies a method for the determination of the speed and effectiveness of the neutralising potential of calcium carbonate, calcium magnesium carbonate and calcium magnesium silicate liming materials by potentiometric titration with hydrochloric acid.This method is applicable only to liming materials with a maximum particle size of 6,3 mm. The type of liming material should be identified according to EN 14069 and the particle size should be determined according to EN 12948.
EN 13971:2012 Referenced Document
EN 12048:1996 Solid fertilizers and liming materials - Determination of moisture content - Gravimetric method by drying at (105 ± 2) °C (ISO 8190:1992, modified)
EN 12945:2008 Liming materials - Determination of neutralizing value - Titrimetric methods Incorporating corrigendum May 2009
EN 12947:2000 Liming materials - Determination of magnesium content - Atomic absorption spectrometric method
EN 12948:2010 Liming materials - Determination of size distribution by dry and wet sieving
EN 13475:2001 Liming materials - Determination of calcium content - Oxalate method
EN 1482-2:2007 Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation
EN 13971:2012 history
2012EN 13971:2012 Carbonate and silicate liming materials - Determination of reactivity - Potentiometric titration method with hydrochloric acid
2008EN 13971:2008 Carbonate liming materials - Determination of reactivity - Potentiometric titration method with hydrochloric acid
2002EN 13971:2002 Carbonate liming materials - Determination of reactivity - Potentiometric titration method with hydrochloric acid