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How to use the glass tube correctly

  • Author:Fanyu
  • Source:Chinamirrormanufacturer. com
  • Release on :2017-11-03
Test tubes can be directly heated, glass test tube Specifications: test tubes, a common test tube, a tube, centrifugal tubes and many other.
glass
  
To use the test tube correctly:
  
1, take the massive solid into the test tube to use tweezers, can not make solids directly into the test tube, to prevent rupture of the tube bottom.
  
2, the solution does not exceed 1/2 of the test tube capacity, heating does not exceed the test tube 1/3.
  
3, with the dropper in the test tube to add liquid can not be stretched into the test tube mouth.
  
4, using the test tube clamp to take the test tube, the test tube clip from the bottom of the test tube, clip in the upper part of the test tube, if the length of the test tube in three parts, then the test-tube clip in the test tube mouth of the end of the site within one-third of the reasonable.
  
5. Heating application Wei.
  
6, after heating can not be sudden cold, to prevent rupture.
  
7, heating to preheat to prevent the tube suddenly hot and burst.
  
8, when heating to maintain the outer wall of the test tube without water droplets, to prevent uneven heating and burst.
  
9, after heating can not be in the test tube not cooled to room temperature when washing test tube.
  
10, the use of heating tube clips, test tubes can not be on the person. When the tube is heated with solid, the nozzle is slightly downward, and the liquid is tilted about 45 °.
  
11, the heating should be even, lest the boiling or tube burst.