The selection of pipette should generally be considered from the following aspects:
1. For the housing, should have high impact resistance, corrosion resistance, and low thermal conductivity (such as PVDF material).
2. For the piston, there are mainly three materials on the market: stainless steel, ceramic, and plastic. Stainless steel has good mechanical properties and long life, but it is not suitable for pipetting strong acids and alkalis; ceramics have high corrosion resistance, but poor mechanical properties.
Of course, high-quality materials often mean higher prices, so you need to factor in the purchase price and longevity.
Pipette performance considerations:
1. The short movement distance of the thumb to complete a pipetting cycle means more comfort;
2. Compare the thumb force required for a pipette of the same range to complete one discharge (must be pressed to the end), which is the key to affecting comfort. The less force means the less risk of finger damage caused by long-term use;
3. When loading and unloading the suction head, the more labor-saving the better;
4. The weight of the pipette is moderate, too heavy will increase the burden on the hand, but too light also often means that the material may be unsatisfactory;
5. Other auxiliary designs, such as the frosted design of the shell and the design of finger hooks, help to further improve comfort.
For more information, check out the centrifuge tube manufacturer!