The equilibrium concentration of complexing reagent is determined by both direct and indirect methods.
确定用直接法和间接法测定显色剂平衡浓度的方法；
For the purification process for complexing of cholesterol, change of complexing reagent from Ca-C to Ca-D improved complexing selectivity and cholesterol yield.
对胆甾醇配合及其提纯过程，将配合试剂从原来的钙盐C改为钙盐d，大大提高了配合的选择性和胆甾醇收率。
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