Device used to transfer small quantities of liquids
This article is about the laboratory tool. For the digital tool in graphics software, see Color picker. For the pipette more broadly, see Pipette. For other uses, see Dropper (disambiguation).
Plastic Pasteur pipettes
An eye dropper, also called Pasteur pipette or simply dropper, is a device used to transfer small quantities of liquids.[1] They are used in the laboratory and also to dispense small amounts of liquid medicines. A very common use was to dispense eye drops into the eye. The commonly recognized form is a glass tube tapered to a narrow point (a pipette) and fitted with a rubber bulb at the top, although many styles of both plastic and glass droppers exist. The combination of the pipette and rubber bulb has also been referred to as a teat pipette. The Pasteur pipette name is from the French scientist Louis Pasteur, who used a variant of them extensively during his research. In the past, there was no equipment to transfer a chemical solution without exposing it to the external environment. The hygiene and purity of chemical compounds is necessary for the expected result of each experiment. The eye dropper, both glass and plastic types, can be sterilized and plugged with a rubber bulb at the open end of the pipette preventing any contamination from the atmosphere.[2] Generally, they are considered cheap enough to be disposable, however, so long as the glass point is not chipped, the eye dropper may be washed and reused indefinitely.
^"Definition of DROPPER". www.merriam-webster.com. Retrieved 21 April 2018.
^"Pasteur Pipettes (transfer pipettes) – A History of glass to plastic". Pastette. Retrieved 2017-06-22.
An eyedropper, also called Pasteur pipette or simply dropper, is a device used to transfer small quantities of liquids. They are used in the laboratory...
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ink from a bottle through the nib, or it may require refilling with an eyedropper. Refillable reservoirs, also known as cartridge converters, are available...
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