This International Standard specifies a gravimetric method, by drying at (102 +/- 2) °C, for the determination of the moisture content of fertilizers and limong materials. The method is applicable to siliceous and carbonic liming materials and the following phosphatic fertilizers: - superphosphates; - natural phosphates; - ground rock phosphates; - partially solubilized rock phosphates. The method is not applicable to hydrated and burnt lime and to ammonium compounds or magnesium sulfates.
90.20 Standard under periodical review
Jan 15, 2022