DIN EN 15933:2012-11

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. The preparation of this document by CEN is based on a mandate by the European Commission (Mandate M/330). This mandate comprises standards on sampling and analytical methods for hygienic and biological parameters as well as inorganic and organic determinants. The mandate aims to prepare standards which are applicable to sludge, treated biowaste and soil and lead to comparable results as far as this is technically feasible. This document (EN 15933:2012) has been prepared by Technical Committee CEN/TC 400 "Project Committee - Horizontal standards in the fields of sludge, biowaste and soil", the secretariat of which is held by DIN. The responsible German committee is NA 119-01-02-02 UA "Chemische und physikalische Verfahren" ("Chemical and physical processes") of NA 119-01-02 AA "Abfall- und Bodenuntersuchung" ("Examination of waste and soil") at the Water Practice Standards Committee (NAW).