GB/T 20937-2007 in English

《GB/T 20937-2007硫酸钾镁肥》由TC105（全国肥料和土壤调理剂标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
本标准规定了硫酸钾镁肥的要求、试验方法、检验规则、标识、包装、运输和储存等。适用于从盐湖卤水或固体钾镁盐矿中仅经物理方法提取或直接除去杂质制成的含镁、硫等中量素的硫酸钾镁肥产品，不适用于用硫酸钾和镁化合物掺混而成的产品。

Scope

This standard specifies the requirements, test methods, inspection rules, labeling, packaging, transportation and storage of potassium and magnesium sulfate fertilizers. This standard applies to potassium and magnesium sulfate fertilizer products containing magnesium, sulfur and other moderate elements, which are produced from salt lake brine or solid potassium and magnesium salt mines only through physical extraction or direct removal of impurities, and does not apply to potassium sulfate and magnesium compounds. blended products.