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Both hydrogen peroxide and multipurpose solutions remove debris and build-up. Significant differences exist between the two. Hydrogen peroxide has the ability to penetrate microbial films, which helps create a deeper clean.
Forward pipetting is a technique to dispense a measured quantity of liquid by means of air displacement pipette. The technique is mainly recommended for aqueous solutions, such as buffers, or diluted acids or alkalis. In case of solutions with a high viscosity or a tendency to foam, reverse pipetting is more suitable.
Whipped cream from a nitrous oxide dispenser, on a slice of pumpkin pie. Nitrous oxide is used because it dissolves easily into the cream, and does not cause the cream to oxidize while it is in the can. The cream must have a minimum fat content of 28% to produce whipped cream with a dispenser.
[4] [9] 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]
A Mohr pipette, also known as a graduated pipette, is a type of pipette used to measure the volume of the liquid dispensed, although not as accurately as a volumetric pipette. [1]
They are used in the laboratory and also to dispense small amounts of liquid medicines. A very common use is 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 ...
The plunger is depressed to both draw up and dispense the liquid. Normal operation consists of depressing the plunger button to the first stop while the pipette is held in the air. The tip is then submerged in the liquid to be transported and the plunger is released in a slow and even manner. This draws the liquid up into the tip.
A burette (also spelled as buret) [1] is a graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in titrations.It is a long, graduated glass tube, with a stopcock at its lower end and a tapered capillary tube at the stopcock's outlet.