| Summary | This standard specifies the terms and definitions, requirements, test methods, inspection rules, identification, packaging, transportation and storage of compound fertilizers containing urea sulfate. This standard is applicable to urea sulfate-containing compound fertilizers with slow-release effect of nitrogen prepared by chemical reaction of urea, liquid ammonia, sulfuric acid, monoammonium phosphate, potassium sulfate or potassium chloride under certain conditions. |