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Standard Type : Main
Document No : ISO 20977:2018
Document Year : 2018
Pages : 14
Edition : 1
Section Volume : Fertilizers and soil conditioners (ISO/TC 134.)
Method A (the dry sieving method) is applicable to all liming materials except wet and paste-like products. Method A is not applicable if blinding, caking, electrostatic charges or agglomeration occur after drying.
Method B (the wet sieving method) is applicable to products which are susceptible to blinding, caking, electrostatic charges or agglomeration after drying. Method B can be used to determine the primary particle size distribution of granulated products. Method B is not applicable to burnt lime and liming materials containing water-soluble constituents.