This International Standard specifies the pretreatments required for soil samples that are to be subjected tophysico-chemical analyses of stable and non-volatile parameters and describes the following five types ofpretreatment of samples: drying, crushing, sieving, dividing and milling.The pretreatment procedures described in this International Standard are not applicable if they affect the resultsof the determinations to be made. This International Standard is also not applicable to samples when volatilecompounds are measured. In general, International Standards for analytical methods will state when it isnecessary to adopt other procedures.