Rubber bulbs are used in chemistry laboratories, by placing them on top of a glass or plastic tube. It serves as a vacuum source for filling reagents through a pipette or pasteur pipette and also help control the flow of liquid from the dropping bottle.[1] By using rubber bulb, the contact of the mouth to the chemicals can be avoided. These rubber rods come in different shapes, sizes and colors.[2]
- ^ Ockerman, Herbert W. (22 April 1991). Illustrated Chemistry Laboratory Terminology. ISBN 9780849301520.
- ^ "Rubber bulb".