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Substance heating in chemical laboratory Share

Substance heating in chemical laboratory
1. When heating the solid, the test tube mouth should be slightly inclined (to prevent the condensed water from flowing back to rupture the test tube). When heating the test tube, it should be evenly preheated, and then fixed on the iron stand to heat.

2. When heating the liquid, the volume of the liquid does not exceed 1/3 of the volume of the test tube. When heating, the test tube is placed at an angle of 45° to the table top. When heating, the test tube is preheated, and then the middle and lower parts of the liquid in the test tube are heated, and from time to time. Move the test tube up and down. In order to avoid injury, do not point the test tube to yourself or others while heating.

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