Inorganic micronutrient fertilizers - Determination of the chelated micronutrient content and the chelated fraction of micronutrients - Part 1: Treatment with a cation exchange resin; German version CEN/TS 17786-1:2022
无机微量营养素肥料.螯合微量营养素含量和微量营养素螯合部分的测定.第1部分:用阳离子交换树脂处理;德语版CEN/TS 17786-1:2022