尿素的测定方法 第9部分:亚甲基二脲含量 分光光度法
Determination of urea Part 9:Methylenediurea content-Spectrophotometric method
Determination of urea Part 9:Methylenediurea content-Spectrophotometric method
Determination of urea-Part 1;Total nitrogen content
Fused calcium magnesium phosphate fertilizer
Determination of chloral content for superphosphorate
Determination of calcium ,magnesium and sulphurcontent for compound fertilizer
Single superphosphate
Determination of fecal coliforms in fertilizers
Determination of mortality of ascarid egg in fertilizers
Water-soluble fertilizers-Determination of sodium,Selenium ,silicon content
Water-soluble fertilizers-Determination of calcium ,magnesium ,sulphur and chlorine content