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Many people know that test tubes are used in laboratory experiments, but how exactly are test tubes cleaned? To what extent is it clean? Everyone knows that small test tube brushes are used to clean test tubes, so do you know how to use small test tube brushes to clean test tubes? Today we come to popularize it for everyone.
Wet the test tube to be cleaned or fill it with half of the volume of distilled water, and then extend the small test tube brushes into the test tube so that the top bristles are close to the bottom of the test tube. After cleaning, take out the small test tube brushes. If the distilled water inside the test tube does not collect into water droplets or flow down, it is cleaned up. Then put the test tube on the test tube rack.
Small test tube brushes play an important role in cleaning the test tube. If the test tube cannot be cleaned, the remaining liquid in the test tube will affect the next experimental operation. The slightest mistake will lead to deviations in an experimental result. Therefore, small test tube brushes play a vital role in cleaning test tubes.
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