A test tube holder can be made from wood or metal. It is used for holding a test
tube in place when the tube is hot or should not .... By using this site, you agree to
Use. Compound Microscope. Uses two lenses to make things look larger. Cover
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A test tube holder's purpose is for holding test tubes in place, but they can also be
useful for ... Test tube racks are commonly used in laboratories to keep test tubes
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Test tube holders come in two main types: tongs and racks. ... like "do not point
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Brass Stoddard test tube clamps easily hold test tubes up to 25mm in ... These
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A very simple test tube holder for experiments. ... You need a piece of wire - a
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This product is widely used for cleaning the test tubes, beaker, and flasks. The
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