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Scientists use test tubes for many purposes, including chemical reactions, distillations and storing chemicals and biological samples. Biologists use test tubes to grow seeds and cultures for plant propagation. Students ... More »

A test tube holder is an apparatus designed to support and store test tubes during a scientific experiment. A test tube is a thin-glassed tube with one closed end used in the examination of cultures such as bacteria. Tes... More »

Test tube racks are commonly used in laboratories to keep test tubes upright so that the equipment does not roll away, spill or become accidentally cracked. Test tubes are delicate equipment, usually made of glass. More »

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Test tube racks are commonly used in laboratories to keep test tubes upright so that the equipment does not roll away, spill or become accidentally cracked. Test tubes are delicate equipment, usually made of glass. More »

Test tube holders are used to distance a person from potentially dangerous tasks when using chemicals in test tubes. They not only extend a person's reach, they protect the user from harm while performing basic lab tasks... More »

The function of a test tube brush is the clean test tubes used in a science laboratory. Test tube brushes are also useful in cleaning aquarium tanks. They consist of twisted wire handles connected to bristles that are ma... More »

A test tube rack is a wooden or plastic holder of test tubes in a laboratory. It has several small holes, each of which holds one test tube in an upright position. Test tube racks help keep a lab organized. They come in ... More »