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Rubber bulb
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. 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. ==Large rubber bulbs==
The larger rubber bulbs are commonly used to draw liquid through a pipette when the reagents are needed in a larger amount. These rubber bulbs will compliment larger pipettes and plastic rods, as the glass will easily break due to uneven pressure distribution.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Rubber bulb」の詳細全文を読む
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