What is the function of testube brush?

Test tube brushes are typically used for cleaning the inside of test tubes and other similar glassware. They are made of a long, thin handle with a soft, bristled end that can reach into the narrow openings of test tubes. The bristles are usually made of nylon or other synthetic materials that are resistant to chemicals and solvents.

Test tube brushes are used to remove dirt, debris, and other contaminants from the inside of test tubes. They can also be used to clean the outside of test tubes, but this is usually not necessary unless the test tubes are particularly dirty.

Test tube brushes are an essential tool for anyone who works in a laboratory setting. They are a simple but effective way to keep test tubes and other glassware clean and free of contaminants.