In the pipette tips (pipette tips) put on the pipetting gun, many people will be hard in the gun box on the box a few times, then the wrong approach, because it will lead to pipettes internal accessories (such as spring) The percussion of the momentary impact force becomes loose, and even causes the scale adjustment knob to stuck.
The correct way is to move the pipette (device) vertically into the tip of the gun, a little hard to turn around slightly to make it close together. If it is multi-channel (such as 8 or 12) pipetting gun, you can move the first gun to the first gun head, and then tilt into the front and rear direction can be shaken. The tip of the mark is slightly more than the O-ring, and you can see the connection part to form a clear seal.
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