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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.
A syringe is a simple reciprocating pump consisting of a plunger (though in modern syringes, it is actually a piston) that fits tightly within a cylindrical tube called a barrel. The plunger can be linearly pulled and pushed along the inside of the tube, allowing the syringe to take in and expel liquid or gas through a discharge orifice at the ...
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.
Rectal bulb syringe to administer smaller enemas. An enema, also known as a clyster, is the rectal administration of a fluid by injection into the lower bowel via the anus. [1] The word enema can also refer to the liquid injected, [2] [3] as well as to a device for administering such an injection. [4]
Early pacifiers were manufactured with a choice of black, maroon or white rubber, though the white rubber of the day contained a certain amount of lead. Binky (with a y ) was first used in about 1935 as a trademarked brand name for pacifiers and other baby products manufactured by the Binky Baby Products Company of New York.
"Bicycle-horn" style manual pumps can damage breast tissue and harbor bacteria in the rubber suction bulb, which is difficult to clean. [ 22 ] [ 23 ] [ 24 ] Foot-powered breast pumps use the same collection tubing and breast horns as electric breast pumps, but are powered by a foot pedal.
The Vacutainer needle is double-ended: the inner end is encased in a thin rubber coating that prevents blood from leaking out if the Vacutainer tubes are changed during a multi-draw, and the outer end which is inserted into the vein. When the needle is screwed into the translucent plastic needle holder, the coated end is inside the holder.
Silicone rubber applications such as catheters are widespread in medicine, but have several limitations. For example, they exhibit poor tear strength and poor resistance to fatigue . Brittle fracture can occur from defects within sections owing to poor control of vulcanization . [ 2 ]
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