How to Detect Magnesium Oxide in Magnesium Hydroxide?

   The testing result of magnesium oxide is always constrained by many factors. Sometimes it has higher error.　　

   1. You should master environment temperature in the different seasons. The test environment temperature has great influence on test data, especially the difference in winter. Therefore, in order to effect solution concentration and titration speed, you should control indoor temperature strictly.  

   2. The measure of titration end point is accurate. The speed near to end point of titration must be slow. In order to make sure the end point is accurate, you should carefully observe the changeable indicator color.

   3. The timing and calibration about concentration of the standard solution. You should use zinc oxide to benchmark solution concentration with EDTA. The concentration of solution is 4. And it should according to the standard of Ministry of Chemical Industry.