GB/T 20412-2021 (English Version) PDF

Scope: This document specifies the terms and definitions, requirements, test methods, inspection rules, labeling, packaging, transportation and storage of calcium magnesium phosphate fertilizers. This document is applicable to alkaline glassy fertilizers containing nutrients such as phosphorus, calcium, magnesium and silicon, which are prepared from phosphate rock and ores containing magnesium and silicon through high-temperature melting, water quenching, and drying, as well as in Granular products that are granulated into balls by adding additives during production.

GB/T 20412-2021 Referenced Document

GB 18382 Fertilizer marking—Presentation and declaration
GB 38400 Limitation requirements of toxic and harmful substance in fertilizers
GB/T 22923 Determination of nitrogen,phosphorus and potassium for fertilizers by auto analyzer
GB/T 24891 Determination of particle size for compound fertilizers
GB/T 6003.1 Test sieves—Technical requirements and testing—Part 1:Test sieves of metal wire cloth*， 2022-10-12 Update
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 8569 Packing of solid chemical fertilizers
HG/T 2843 Chemical fertilezer products-standard volumetrie,standard,reagent and indicator solutions for chemical analysis