1, the scope of application. Pipettes generally have a use range, such as 100 microliters-1000 microliters, meaning that the lower limit of sampling 100 microliters, the highest 1000 microliters. So choose the right range.
2, used up the range adjusted to the maximum. Because the pipette gun belongs to the spring coil control range, adjusted to the maximum spring most relaxed. Not adjusting the maximum may lead to a decline in spring force, resulting in inaccurate range.
3. Adjust the range gently, not too hard. To be like loving girlfriend as gently adjusted, rhythmic, not easy to force too hard.
4, take the gun posture always muzzle down. Do not point it at people or against the direction of gravity, so as not to backflow into the inner wall of the barrel - the result is corrosive, polluting, unprofessional and harmful.
5, pipette gun suction and discharge process to be light. Fierce suction will be sucked through the liquid inertia into the inner wall of the barrel; discharge too fast may cause air disturbance, bring into the inner wall of the barrel bacteria into the sterile environment.
6, suction and discharge in the first pressure to feel the position can, do not continue to force. Liquid suction with a strong force will cause more suction, liquid discharge with too much force will cause more discharge, novice or veteran do not worry about their own available balance to check this step.
7, the most important point: the pipette gun belongs to the strong inspection equipment, use the balance to calibrate. In the experimental process, the general pipette disadvantage is not accurate enough, worse than the pipette, the advantage is that the speed and efficiency is higher than the pipette, especially when the aseptic operation is convenient and fast.