Ad
related to: safety bulb for pipettes and prices list of materials available
Search results
Results from the WOW.Com Content Network
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 are for Class A pipettes; Class B pipettes are given a tolerance of twice that for the corresponding Class A.) A specialized example of a volumetric pipette is the microfluid pipette (capable of dispensing as little as 10 μL) designed with a circulating liquid tip that generates a self-confining volume in front of its outlet channels. [3]
A safety lamp has to ensure that the triangle of fire is maintained inside the lamp, but cannot pass to the outside. Since any breathable atmosphere contains oxygen, and a safety lamp's raison d'être is to operate in an atmosphere also containing fuel (firedamp or coal dust), the element which must be blocked is heat. The key to manufacturing ...
Volumetric pipettes or bulb pipette allow the user to measure a volume of solution extremely precisely (precision of four significant figures). These pipettes have a large bulb with a long narrow portion above with a single graduation mark as it is calibrated for a single volume (like a volumetric flask). Typical volumes are 20, 50, and 100 mL.
Less commonly, some TD pipettes are made "to contain" as per manufacturer and made to be blown out. [10] [11] A set of two rings printed on the upper end of the pipette indicate that it is a "blow out" type and should be blown using a rubber bulb. Do not blow the solution out if the pipette has no rings on the upper end. [3]
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 flicker light bulb, flicker flame light bulb or flicker glow lamp is a gas-discharge lamp which produces light by ionizing a gas, usually neon mixed with helium and a small amount of nitrogen gas, by an electric current passing through two flame shaped electrode screens coated with partially decomposed barium azide. The ionized gas moves ...
Whereas manual pipettes need a movement of the thumb (up to 3 cm), electronic pipettes have a main button. The programming of the pipette is generally done by a control wheel and some further buttons. All settings are displayed on a small display. Electronic pipettes can decrease the risk of RSI-type injuries. [8] [9]
Ad
related to: safety bulb for pipettes and prices list of materials available