1 Scope
This document specifies two methods (method A and method B) of measuring the effect
of the addition of any material claimed to have a liming effect on the soil, using
the same basic principles.
Method A measures the changes to the soil pH resulting from the addition of any material
claimed to have a liming effect on a standard soil, measured over a period of one
month.
Method B assesses the efficiency of any material claimed to have a liming effect, using a range of defined soils and
measured over a period of up to 2,5 years.
The methods are not applicable to mineral products coarser than 6,3 mm for method
A or 20 mm for method B, determined according to EN 12948.
NOTE These methods allow comparison of products under controlled climatic conditions but do not replace field experiments.