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Transcript of Micropipettes
The pipette is filled by dipping the tip in the volume to be measured, and drawing up the liquid with a pipette filler past the inscribed mark. The volume is then set by releasing the vacuum using the pipette filler or a damp finger. While moving the pipette to the receiving vessel, care must be taken not to shake the pipette because the column of fluid may "bounce".
Positive displacement pipettes These are similar to air displacement pipettes, but are less commonly used and are used to avoid contamination and for volatile or viscous substances at small volumes, such as DNA. The major difference is that the disposable tip is a microsyringe (plastic), composed of a plunger which directly displaces the liquid.
Volumetric pipettes Volumetric pipettes allow the user to measure a volume of solution extremely accurately and then add it to something else. They are commonly used to make laboratory solutions from a base stock as well as prepare solutions for titration. They are typically marked to indicate one single volume in a particular size pipette (as are volumetric flasks). Many different sizes are available. Graduated pipettes Graduated pipettes use a series of marked lines (as on a graduated cylinder) to indicate different calibrated volumes. These also come in a variety of sizes. These are used much like a burette, in that the volume is found by calculating the difference of the liquid level before and after liquid is dispensed. Typically the precision of a graduated pipette is not as great as that of a volumetric pipette. Two types of graduated pipettes exist:
The tips are color coded as well. That really helps when buying and when using mutiple types of pipettes at the same time with multiple tip types aswell MICROPIPETTES a device used to move a very small amount of water. Most typical used in scientific research and in criminology. This piece of science equipment has help many researchers discover many sicknesses and cures. it is also used in microinjection. The first micropipette was patented in 1960 by Dr Hanns Schmitz (Marburg/ Germany). The founder of the company eppendorf there are many different types of micropipettes ever since 1960 a micropipette has help in almost every cure for disease involving blood, DNA, or any kind of cell disorder. How has it helped? A micropipette is... all yourn base are belong to us someone set up us the bomb mmm zig mmm zig mmm zig mmm zig mmm zig mmm zig mmm zig mmm zig mmm zig mmm zig THIS IS OVER CAUSE OH NO!!!! SOMEONE SET US UP THE BOMB!!!! up the