Method For Cleaning And Scrubbing Test Tubes In Laboratory Test Tubes
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Update time : 2021-11-15 11:14:27
As a commonly used instrument in laboratories, test tubes have a very high degree of cleanliness, and we need to clean them carefully. The test tube used in the experiment must be thoroughly cleaned because the impurities in the test tube will harm the experiment. If the test tube is not clean, it will affect the effect of the experiment. It will also cause the experiment to produce wrong phenomena, leading to the conclusion and inference of the wrong conclusion. . Therefore, it is very important to use a test tube cleaning brush to clean the test tube.
Test tube cleaning brush is also called twisted wire brush, straw brush, pipe brush, through-hole brush, etc. It is a widely used brush. It is made of stainless steel wire as the skeleton. The upper section of the brush is a thorny cylindrical brush with a top Some prominent bristles. In medicine or piping, the test tube brush has a lot of credit. It can clean the top and sides of the pipe, even if it is a deep pipe, a new type of test tube brush with a tail has appeared.
The method of cleaning the test tube is as follows:
1. Pour out the waste liquid in the test tube.
2. Fill the test tube with half of the water, shake it up and down to wash away the dirt, pour out the water, put it in the water, shake, and repeat the rinse several times. 3. If there are stains on the inner wall of the test tube that is difficult to wash off, use the test tube cleaning brush to scrub at this time. We must choose the appropriate test tube brush according to the size and height of the test tube. First use a test tube brush dipped in detergent (soapy water) to scrub, and then rinse with clean water. When using the test tube brush to scrub, slowly move up and down and rotate the test tube brush. Do not use excessive force to avoid damage to the test tube.
4. For the cleaned glass instrument, when the water attached to the tube wall will not gather into droplets or flow down in a stream, it means that the device has been cleaned. The washed glass test tube should be placed on the test tube rack or in a designated position.
Test Tube Cleaning Brush
Points to note when using test tubes to scrub test tubes:
1. The diameter of the test tube mouth should match the diameter of the test tube brush. A test tube brush with an excessively large diameter will crack the test tube; 2. When scrubbing the test tube, flush the residual liquid in the test tube with water; 3. Use moderate force during the scrubbing process. Do not use excessive force to avoid puncturing or crushing the bottom of the test tube: 4. There are corrosive or acid-base drugs in the test tube, which needs to be diluted or rinsed before using the test tube brush; 5. After cleaning, rinse the test tube with clean water and hang it in a cool place to dry; 6. If necessary, when using the test tube brush to scrub the test tube, you can add a cleaning solution such as detergent.
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