Making standard solution as reference and preparing the simulation of reagents makes it possible that content of and cyanide in the sample can be measured with visual colorimetry.
制作标准溶液作为参比，制备模拟试剂，实现用目视比色法测定样品中微量磷和氰化物含量。
Making standard solution as reference and preparing the simulation of reagents makes it possible that content of and cyanide in the sample can be measured with visual colorimetry.
制作标准溶液作为参比，制备模拟试剂，实现用目视比色法测定样品中微量磷和氰化物含量。
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