GST serological pipette automatic production line equipment manufacturers have previously introduced that pipettes are commonly used measuring instruments in laboratories and are widely used in chemistry, food, medicine, biology and other fields. The classic tool used with pipettes is ear wash. Should I upgrade to a pipette controller?

　　There are many types of pipette controllers, such as manual, electric, electromagnetic, and external motors. This time, we take the basic entry model, Hirschmann's manual pipette controller as an example, and the suction ear ball in the following comparison in terms of.

　　One is to control the difficulty and proficiency. The ear suction ball needs to be operated with both hands, and it is difficult to control the volume of a single suction. The sealing, transfer, transfer and deflation of the ear washing ball and the fingers all require careful and diligent practice, and the proficiency and efficiency between operators are relatively different If you are not skilled, repeatedly adjusting the meniscus will greatly consume the operator's time and patience.

　　The manual pipette controller is operated with one hand. Press the suction button to inhale about 2ml of liquid. Press and hold the discharge button, and the liquid will be injected from the pipette into the corresponding vessel under the action of gravity. When encountering a blowable pipette, press the blowing ball on the top to blow the remaining drop in the tube into the vessel. The operation is very simple, the learning and training costs are low, and proficiency can be achieved with a little practice.

　　The second is the operating posture. The suction ball needs to be operated on the upper end of the pipette. Because the pipette itself is long, it generally needs to stand. The pipette controller is hand-held, and the hand does not need to be lifted too much, which not only saves time and effort, but also is more suitable for sitting operation, especially in the case of a fume hood with glass partitions, the advantages of the pipette controller are more obvious.

　　The third is generality. Hirschmann's pipette controllers are suitable for graduated pipettes and fat belly pipettes from 0.1 to 200ml, both glass and plastic. The ear suction ball has the volume size, the thickness of the hole, etc. that need to be considered for adaptation.

　　The fourth is prediction and risk. Each time the manual pipette controller presses the suction button, about 2ml of liquid is inhaled, 2ml is pressed once, and 5ml is pressed twice for the whole process plus one and a half times. It is easy to predict and operate, and it is not easy to over-suction. The ear suction ball is more difficult to control the suction volume, and it is easy to over-suction when a small volume of liquid is suctioned. Some types of liquids have certain risks.

　　To sum up, the pipette controller has great advantages compared with the ear suction ball in terms of control difficulty, proficiency, operation posture, versatility, prediction and risk, especially the large flow of people, fume hood, etc. In the case of partition operation and the risk of liquid over-absorption, it is even more necessary to use a pipette controller instead of the suction ball.