1 Scope
This European Standard specifies a method for the determination of pH within the range
pH 2 to pH 12 in a suspension of sludge, treated biowaste or soil in either water
(pH-H2O), or a 0,01 mol/l calcium chloride solution (pH-CaCl2).
This European Standard is applicable to sludge, treated biowaste and fresh or air-dry
soil samples.