A pipetting system includes: a pipetting device; a pipetting container including a plurality of pipetting positions into each of which the pipetting device pipettes liquid; and a positional relation detector configured to detect a positional relation between a front-end position of a tip and each of the pipetting positions. The pipetting device includes circuitry configured to, when a pipetting switch that orders pipetting is turned on, on condition that the front-end position of the tip detected by the positional relation detector is located at one of pipetting positions that is indicated by a pipetting pattern set up in advance, allow pipetting corresponding to the pipetting pattern, and on condition that the front-end position of the tip detected by the positional relation detector does not correspond to a corresponding one of pipetting positions that is indicated by the pipetting pattern set up in advance, disallow the pipetting.

A cosmetic container with an adjustable discharge quantity includes a container body, an inner cover, an outer cover, a button, a piston, and an elastic member. The upper part of the container body is provided with an opening. The inner wall of the inner cover is threadedly connected to the opening of the container body, and the inner cover extends upward to form an inner cylinder. A plurality of stepped grooves with different depths are arranged in parallel in a movement area of the outer wall of the inner cylinder. The lower end of the inner cover is hermetically connected to a dropper. The outer cover is fixedly connected to the inner cover. The button is inserted between the inner cover and the outer cover. The piston is sleeved on a piston connecting rod of the button and moves up and down with the button.

A pipetting device includes a housing, a valve assembly, and an actuator assembly. The housing includes a tip for receiving a capillary tube. The valve assembly includes a shuttle valve having a filling position and a dispensing position and a valve rod. The actuator assembly includes an actuator, a valve trigger, a piston mount, and an indexing mechanism. The actuator extends from the housing and has a push button coupled to a push rod. The valve trigger being configured to engage the valve assembly and includes an aperture configured to receive the piston mount therein. The indexing mechanism is configured to index a rotated position of the push button to a predefined volume of dispensed fluid.

A pipette controller for aspirating and dispensing multiple aliquots of a fluid from a reservoir of fluid. The pipette controller can include a pipette holder adapted to operatively connect a pipette to the pipette holder; a pump having a vacuum port and a pressure port, the pump pneumatically connected to the pipette holder; an aspirate valve that controls airflow between the vacuum port and the pipette holder; a dispense valve that controls airflow between the pressure port and the pipette holder; a piston chamber; an aliquot dispense pump including a piston having a shaft that extends into the piston chamber, the shaft defining a stroke length; and an aliquot check valve that connects the pipette holder and the aliquot dispense pump; wherein the aliquot valve opens to allow airflow into the pipette holder upon engagement of the aliquot dispense valve. The pipette controller can also include a piston pump pneumatically connected to the pipette holder configured to deliver a bolus of air to the pipette holder.

A multichannel pipetting head comprises a plunger actuator comprising at least one groove with an upper border, and a lower border. A plurality of plunger-cylinder units, wherein each plunger-cylinder unit comprises a cylinder and a plunger comprising a plunger head. The plunger head comprises a projecting upper abutment region adjoining the upper border, a projecting lower abutment region adjoining the lower border and laterally offset relative to the projecting upper abutment region, a plurality of guides. Each of the cylinders is coupled to a neck and held on each of the plurality of guides. During lateral movement of the plurality of guides, the plunger head is configured to tilt in the groove and to be held with the upper abutment region abutting the upper border and with the lower abutment region abutting the lower border of the groove due to restoring forces that occur during tilting in the plunger-cylinder units.

An automated pipetting system includes a pipettor. The pipettor includes a pipetting channel, a first plunger mechanism operable to change a pressure in the pipetting channel to aspirate or dispense a liquid, and a second plunger mechanism operable to change the pressure in the pipetting channel to aspirate or dispense the liquid.

An automated pipetting system includes a pipettor. The pipettor includes a pipetting channel, a first plunger mechanism operable to change a pressure in the pipetting channel to aspirate or dispense a liquid, and a second plunger mechanism operable to change the pressure in the pipetting channel to aspirate or dispense the liquid.

The present invention relates to a nucleic acid amplification test apparatus, and an automatic sample analysis system having same and, more particularly, to a nucleic acid amplification test apparatus in which separation and purification, dispensation, amplification, and testing of samples are performed integrally, and an automatic sample analysis system having same. Disclosed in the present invention is a nucleic acid amplification test apparatus comprising: a housing (30) having an inner space (S1) isolated from the outside; a multi-well plate insertion unit (100) into which a multi-well plate (40) having a plurality of reaction tubes (1) accommodating a target nucleic acid solution is inserted through an automatic purification and dispensing apparatus (10); a sealing plate insertion unit (200) into which a sealing plate (50) having a sealing means for sealing the inlets of the plurality of reaction tubes (1); a fluorescence detection unit (400) disposed on an upper side of the sealing plate insertion unit (200) and detecting a target nucleic acid in the reaction tubes (1); and a temperature control block (500) disposed on a lower side of the multi-well plate insertion unit (100) and controlling the temperature of the reaction tubes (1), wherein the reaction tubes (1) are moved relatively so as to be adjacent to the sealing means to be then sealed by the sealing means.

A method for dosing liquid by using a pipette and a syringe, including releasably connecting the syringe to the pipette. Then displaying the dosing volume corresponding to a set dosing increment by using a display apparatus. Next, sucking liquid into the syringe by actuating a drawing lever. Next, detecting a respective position of a drive element along its path of movement when the drive element is shifted along the path. Finally, determining and displaying by the display apparatus a possible maximum number of dosing steps with the set dosing increment without refilling the syringe after executing a reverse stroke starting from a position of the drive element reached at the end of filling.

A pipettor includes a wash chamber between an upper plate, a lower plate, an upper seal, and a lower seal. The upper and lower seal retain each other and are located between the upper and lower plates. The pipettor includes a gasket located below the lower plate, a pipette tip retained by the gasket, and a piston with a tapered tip that passes through the plates, seals, and gasket into the pipette tip. The upper and lower seal isolate the piston from the wash chamber. The pipettor includes a channel defined by the piston, extending into the pipette tip, and an actuator that advances and retracts the piston. When the actuator retracts the piston such that the piston loses sealing contact with the lower seal and the wash chamber is supplied with wash fluid and pressurized, wash fluid passes through the groove in the upper seal and into the channel