Purchase and Maintenance of Pipette
Product performance: the accuracy and repeatability of the pipette
For the vast majority of users, testing product performance before purchase is both difficult and unnecessary. Therefore, it is mainly based on technical data provided by the manufacturer. But here are two things to explain: First, don’t easily believe the seller’s verbal commitment, be sure to check the written materials provided by the manufacturer; second, the brands that have a greater impact on the global pipette market, the technology they provide Data is more credible.
Reliable and durable products
This aspect depends primarily on the materials used in the pipette. For the outer casing, it should have high impact resistance, corrosion resistance and low thermal conductivity (such as PVDF material); for pistons, there are mainly stainless steel, ceramic and plastic materials on the market. Stainless steel has good mechanical properties and long service life, but it is not suitable for pipetting strong acid and alkali; ceramics have high corrosion resistance, but mechanical properties are poor. Of course, quality materials often mean higher prices, so you need to consider the factors of purchase price and longevity.
Ergonomic design of the product
The main points can be considered as follows: First, the movement distance of the thumb to complete a pipetting cycle is short, which means that the comfort is higher; secondly, the pipette of the same range is required to complete one discharge (must be pressed to the end). The force of the thumb is the key to affecting comfort. The less force means the lower the risk of finger damage caused by long-term use. Third, the more convenient the loading and unloading of the tip, the better the labor. Fourth, the weight of the pipette is moderate. Excessive weight will increase the burden on the hand, but too light will often mean that the material may be unsatisfactory. Fifth, other auxiliary designs, such as the matte design of the shell and the finger hook design, help to further improve comfort.