A ring stand used many different clamps in order to heat substances over a bunsen burner without having to hold them there. This prevents many burns from taking place.
A bunsen burner sits under the clamps of the ring stand to provide the heat in order to heat substances.
A test tube clamp is one of the clamps used on the ring stand to hold a test tube in place over the bunsen burner rather than having to hold the test tube over the flame by hand or tongs.
A ring clamp is capable of holding different things, with the use of a clay triangle or wire gauze, to be heated over the bunsen burner.
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