About the Choice of the Pipette

What is pipette

Pipette is an instrument for quantitatively transferring liquid which is generally used to remove small or micro-amounts of liquid in the analytical test.

Pipettes can be classified into air-displacement pipettes and positive-displacement pipettes according to principles. Air-displacement pipette is mainly used for standard pipetting. Positive-displacement pipette is mainly used to treat special liquids such as volatile, corrosive, and viscous.

How to choose the pipette

1. Performance– the accuracy and repeatability of the pipette.
2. reliability and durability- mainly depending on the materials used in the pipette.
3. Ergonomic design-considering the following aspects.
4. High-quality performance
5. Unique Volume Control System
6. Consistent accuracy and repeatability
7. Reliable and durable
8. Human body engineering

The following will take the human body engineering of the pipette as an example, and outline the matters needing attention when purchasing the pipette.

The following points can be considered when purchasing the pipette

First, the shorter moving distance of the thumb to complete a pipetting cycle means higher comfort;

Secondly, comparing thumb force to drain the same range of pipettes(the key factor affecting comfort). Less force means a lower risk of finger damage caused by long-term use;

Third, the force requires to mount or dismount the tip, the more labor-saving the better;

Fourth, the weight of the pipette is moderate, too heavy will increase hand burden, but too light may mean the material is slightly worse;

Fifth, other ancillary designs, such as the matte design of the housing and the finger hook design to further enhance comfort.

Accuracy and repeatability

For the vast majority of users, it is both difficult and unnecessary to test product performance before purchase. Therefore, it is mainly based on the technical data provided by the manufacturer. But the following two points should be paid more attention to by users:

Firstly, do not easily believe the seller’s verbal commitment, must consult the manufacturer’s written materials;
Secondly, the brand which has a great influence on the global market of pipettes provides more reliable technical data.

Reliable and durable

In this respect, it mainly depends on the material used in the pipette. For the shell, it should have high impact resistance, corrosion resistance, and low thermal conductivity (such as PVDF material); for the piston, there are mainly three kinds of materials in the market: stainless steel, ceramic and plastic. Stainless steel has good mechanical properties and long service life, but it is not suitable for strong acid and alkali transfer. Ceramics have high corrosion resistance, but poor mechanical properties. Of course, high-quality materials often mean higher prices, so we need to consider the factors of the purchase price and life. Hawach provided reasonable price pipettes, such as Advanced Half Autoclave Single Channel Fixed Pipettes, Advanced Fully Autoclave 8/12 Channels Adjustable Pipettes, Advanced Half Autoclave Single Channel Adjustable Pipettes, Standard 8/12 Channels Adjustable Pipettes, Linear And Round Stand For Pipettes, welcome to contact us.