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The pipette, a very important laboratory tool

There are common and basic instruments that a laboratory need. Performing experiments, testing samples, spinning tubes and many more procedures require to have handling instruments such as serological pipettes. These items are frequently used in the laboratory field in order to measure small milliliter volumes of liquid from less than 1 ml to up to 50 ml. You need to have the ideal pipettes in your laboratory stock, in order to make sure your experiments, researches and testing have reliable results.

A pipette is a very common laboratory tool in chemistry, biology and medicine fields. They are used to transport a measured volume of liquid as a media dispenser. There are several purposes for different kinds of pipettes including different accuracy and precision levels. Pipettes may range from a single piece pipettes to complex adjustable and electronic pipettes. For example, you can use a single channel pipette if your source and destination containers are small, such as twist-top, flip-cap, or conical tubes. However, because single channel pipettes are typically compact in size, they are versatile and can be used with troughs, or 96-/384-well plates.

Pipette types

As you may know there is a wide range, variety pipettes. Before you purchase any kind of pipettes you must make sure what pipette type you want to buy. One of the first things to keep in mind is the kind of laboratory you run, because pipettes are very common in biological, medicine and chemical fields. The second thing you must think about is precision levels and accuracy. Ask yourself what kind of experiments you are going to perform. In addition, another key and important factor is if you run a research lab, educational lab or a sample-testing laboratory. After you have the answer to all of those questions, you can choose between the different pipette types.

  • Volumetric Pipettes: This model is meant to transfer a specific volume of a given liquid. It usually has a capacity of between 1 and 100 ml. They can be shaped somewhat like a rolling pin, with two thinner ends and a thicker bulge in the middle.
  • Measuring Pipettes: These are straight tubes with one tapering end. They have clearly marked hash marks along the side of the tube, so multiple amounts of liquid can be measured with a single pipette. These kinds of pipettes can usually measure a volume between 0.1 ml and 25 ml.
  • Micropipettes: These are different from volumetric pipettes because they need to be calibrated in order obtain incredibly accurate results. If you want one of these pipettes, you should know that you might have to calibrate it every few months from application to application.
  • Mohr and Serological Pipettes: Measuring pipettes are further subtyped into Mohr pipettes and serological pipettes. The difference between these two types is that Mohr pipettes' hash marks, or gradations, always end before the pipette's tip, while serological pipettes have gradations that continue down into the tips.
  • Pasteur pipette: These models resembles an archetypal liquid dropper. Pasteur pipettes are considered inaccurate today. They are neither calibrated nor graduated, and are more often used in biology – rather than chemistry – laboratories as a way of transferring aqueous solutions from one container to another.

Pipette disposable

As you may know, these are disposable items and they need to be used with care and carefully so that the lab technician and/or scientist does not get any harms during any kind of procedure. In order to accomplish this, there are some recommendations you should follow. For example: Do not use your mouth to pull the liquid into a pipette. Secondly, do not let the solution get to the bulb. Finally, do not insert the pipette into the hole in the bulb.

In Kalstein Laboratory Equipment, we are offering you the  pipettes  you need in your company.

This article was published on Monday 04 September, 2017.

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