1. Product performance, namely the accuracy and repeatability of the 8-channel pipetting workstation
The accuracy and repeatability of liquid transfer workstations are important indicators for procurement, directly related to the smooth progress of actual analysis and testing. Many brands of liquid transfer workstations do not place enough emphasis on temperature uniformity. A liquid transfer workstation is a type of liquid transfer equipment that takes the uniformity of internal temperature as an important means to ensure the accuracy of the liquid transfer equipment. In order to effectively ensure the uniformity of internal temperature, a patented air chamber handle has been specially designed, where the air inside the handle is automatically exchanged with the outside world.
For the vast majority of users, testing the performance of a product before purchase is difficult and unnecessary. Therefore, it is mainly based on the technical data provided by the manufacturer. But there are two more points that need to be clarified here: first, do not easily trust the seller's verbal promises, and be sure to refer to the written materials provided by the manufacturer; The second is a brand with significant influence in the global pipette market.
2. The reliability and durability of the product
In this regard, it mainly depends on the materials used in the liquid transfer workstation. The shell should have high impact resistance, corrosion resistance, and low thermal conductivity (such as PVDF material); For pistons, there are three main materials on the market: stainless steel, ceramics, and plastic. Stainless steel has good mechanical properties and a long service life, but it is not suitable for conveying liquids with strong acids and alkalis; Ceramics have high corrosion resistance, but their mechanical properties are poor. Of course, high-quality materials often mean higher prices, so it is necessary to consider factors such as purchase price and service life comprehensively.
3. Product Ergonomic Design
The following points can be considered:
1) After completing the liquid transfer cycle, the movement distance of the thumb is shorter, which means higher comfort;
2) Comparing the thumb force required to complete a one-time drainage with a pipette of the same range (be sure to press it all the way down) is the key factor affecting comfort. The less force applied, the lower the risk of finger injury caused by long-term use;
3) The easier it is to load and unload the suction head, the better;
4) The weight of the pipette is moderate. Being too heavy can increase the burden on the hands, but being too light often means that the material may not be satisfactory;
5) Other auxiliary designs, such as the frosted design of the shell and the design of the finger hook, can further improve comfort.