A pipette with adjustable number of tips and method of use

Abstract

The application relates to the field of pipettes, and provides a pipette capable of adjusting the number of gun heads to solve the problem that the number of gun heads cannot be adjusted when a pipette is used to take liquid, the pipette comprising a containing seat, a gun head, a rotating shaft pressing rod, a suction head pressing plate and a second elastic member, the containing seat being provided with a shaft hole, the hole wall of the shaft hole being provided with a containing groove along the length direction of the shaft hole, the bottom wall of the containing groove being provided with an opening, the bottom wall of the containing groove being provided with a first elastic member, and the two ends of the containing seat near the bottom being provided with mounting plates; the gun head is mounted in the containing groove, the rotating shaft pressing rod is arranged in the through hole, the rotating shaft pressing rod is provided with a folding groove, the suction head pressing plate is movably connected with the mounting plate and has a limited movement degree in the vertical direction, and the suction head pressing plate is provided with a gap. The number of gun heads that can be folded is adjusted through the folding grooves with different lengths on the rotating shaft pressing rod, and then the number of gun heads used is adjusted; the suction head pressing plate is used to press the suction head that is not assembled, and then the suction head that is not assembled is prevented from being lifted.

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