As common equipment in the lab, pipettors are small tubes transferring liquids from one container to another one. In the 1700s, the chemist Francois Descroizilles invented the alkalimeter, which is known as a precursor to the pipettor. According to the record, the alkalimeter looked similar to a graduated cylinder and was used to work with acid and base titrations. And the scientist named Gay-Lussac modified the version of the alkalimeter and coined the word pipettor for it.
After that, the French biologist Louis Pasteur invented the pasteurization process and created Pasteur pipettors as well. It’s big progress because the samples could be transferred without contamination by using the Pasteur pipettors. But something needed to be done when the accidents happened when the scientists used their mouths to suck up the liquid by using mouth pipetting, such as a physician sucking a culture of typhoid bacilli into his mouth in 1893.
In the 1950s, Heinrich Schnitger invented a micropipette that has a piston-driving pump system with a tiny spring. That means the fixed pipettor which could draw precise small-volume liquids was not a dream anymore. In the 1970s, an adjustable volume pipettor and then a multi-channel pipettor came to use. And now, Hawach can help you find modern electronic pipettors and mechanical pipettors for your liquid transfer solutions.
Structure of Pipettor
Hawach pipettor is mainly used in environmental protection, medicine, food hygiene, and other scientific research departments, in biochemical analysis and testing for liquid sampling or adding liquid. It works as a piston suction pipe using the principle of air discharge to determine the capacity of the pipettor by the distance the piston moves in the piston sleeve.
The pipettor is an output gauge, which can be divided into two categories: quantitative pipettor and adjustable pipettor. Its type is divided into single head type and long head type. The structure consists of a display window, a capacity mediation component, a piston, a piston sleeve, a suction tube, and so on.
Humanized Design of Pipettor Stand
Hawach pipettor rack is mainly used to store frequently used pipettors, or used to dry pipettor pipe support, mainly linear and round two types. Hawach pipettor stand is suitable for chemical experiments and test rooms. It is composed of a support, a branch rack, and a liquid collecting tray.
The support is composed of the base and the prop fixed on the base, the branch pipe frame is composed of the lower support plate and the upper support plate and the connecting body that connects them together; the lower support plate and the upper support plate have a through hole between them, and they are arranged on the prop through the through hole.
Advantages in Operation
Hawach pipettor stand can effectively prevent the pipettor from being damaged to a certain extent, help the pipettor to be ventilated, and dry the pipettor as soon as possible. It is convenient to take and release, there will be no collision between the pipettors, and the residual liquid in the pipettor will not flow out of the rack to pollute the environment.
What’s more, Hawach pipettor stand can hold up to 6 pipettors ranging from single channel types to multiple channel types, and then greatly satisfy different needs of customers.
Measuring Instrument Control
The control of measuring instruments includes first verification, subsequent verification, and in-use inspection. The pipettor is preferably carried out at room temperature of 25 degrees Celsius and the room temperature change shall not be greater than 1 degrees Celsius.
Check the medium should meet the requirements of distilled water or ionic water, and put it 24 h in advance into the laboratory, so that its temperature and room temperature difference must not be more than 2 degrees Celsius.