This International Standard specifies the determination of the bulk density ( fine-grained fertilizers. The method is applicable to fertilizers Nhich contain a large proportion of particles of diameters less than 0,5 117113. a method for oose) of solid NOTE 1 For fertilizers which contain a large proportion of particles of diameters within the range from 0,5 mm to 5 mm, a method is specified in ISO 3944. The method is applicabie to dry fertilizers only. If the fertilizer has absorbed moisture during transport or storage, it is necessaty to dry it in an environmental chamber, with constant low humidity, Prior to the determination.