Introduction Of Chemistry, Biology, And Medical Pipette
As a useful instrument used to transport a measured volume of liquid, pipettes are widely used in chemistry, molecular biology research, and the medical tests too. From electronic pipettes to mechanical pipettes, you can find Hawach pipettes available in designs for various purposes with different levels of accuracy and precision.
The principle of the pipette is to create a vacuum above the liquid-holding chamber and release some vacuum to draw up and dispense liquid. The original pipette is made of glass which is used with aqueous solutions in the chemistry field. And the piston-driven air displacement pipettes are recommended as the most accurate and precise pipettes.
When you draw up liquid, you’d better dip the tip 3 to 5 mm below the liquid surface at a 90-degree angle. When you dispense, the best way is to hold the pipette at an angle of 45 degrees and place the tip against the side of the receiving vessel. If you have liquid in the tip, remember not to wipe off or blot the tip in any way, even from the exterior, as it will tend to attract and bleed off some of the liquid, with the poor result followed.
1. In terms of specifications: because the pipette has only a few fixed specifications, its use is limited. The pipette can be measured at will, so it is widely used. It also depends on the accuracy required by your experiment. Generally, you can choose a suitable pipette for analytical experiments.
2. On the scale: the pipette has a full scale, and the pipette only has a full scale. Pipettes are prone to errors during operation. The pipette is a one-time operation with fewer errors.
In terms of accuracy: a pipette with a scale is called a pipette, a glass tube is called a pipette, or a single standard pipette. The pipette is more accurate than a pipette. Especially when transferring a 20 or 25 ml volume of solution, it is necessary to take a graduated pipette several times to get a large error! Get it all in one go with a pipette!
3. Measure out and measure in: pipettes are used to accurately measure a certain volume of solution. A pipette is a meter-out instrument used only to measure the volume of the solution it emits. The pipette is a straight glass tube with a scale to know the volume of the liquid being measured. According to JJG196-2006, the type mark on the pipette: measuring type: In; measuring type: Ex; blowing type: Blow out.
A pipette is a precise pipette, which is more complicated to use; a pipette is a coarse pipette, which is simpler to use. So labs need to use them in different situations.
The use of pipettes is limited because they are available in a few fixed sizes. The pipette can be measured at will, so it is widely used. It also depends on the accuracy required by your experiment. Generally, you can choose a suitable pipette for analytical experiments.