Abstract: Described are exemplary embodiments of a handheld, powered positive displacement pipette assembly, including a plurality of syringes of different volumes and a powered positive displacement pipette having unique mechanisms for the retention, identification, operation, and ejection of said syringes.

Abstract: An environmentally enhanced pipette tip rack includes a molded fibrous cellulose shell and an injection molded plastic tip deck; the shell and other features of the rack are configured for strength, minimal contamination, and to be biodegradable, compostable, or recyclable.

Abstract: Described are exemplary embodiments of a syringe identification system for use with a positive displacement pipette, such as a handheld powered positive displacement pipette. An exemplary syringe identification system may include a sensor, such as a color sensor, that is located at or near a distal end of the pipette and arranged such that the sensor is operative to read an identifying marking(s) on a syringe that has been installed to the pipette. The sensor may be a color sensor having an illumination source and configured to read a color code on the syringe. The color code may be usable to identify the syringe to the pipette.

Abstract: Described are exemplary methods for dispensing liquid from a handheld, powered positive displacement pipette.

Abstract: A pipette calibration and volume offset mechanism. The calibration and volume offset mechanism is provided to facilitate user selectable calibration or volume offset operations of a pipette to which the calibration and volume offset mechanism is installed, through axial displacement of a threaded element that effectively moves the home position of the pipette. An offset counter of the calibration and volume offset mechanism is rotationally coupled to the threaded element during a volume offset operation to indicate offset magnitude, but decoupled from threaded element during a calibration or recalibration operation.

Abstract: Described are exemplary embodiments of a handheld, powered positive displacement pipette having unique mechanisms for the retention, identification and ejection of associated pipette syringes.

Abstract: Described are exemplary embodiments of a grasping mechanism for a powered, handheld positive displacement pipette, the grasping mechanism configured to grasp and releasably retain the piston head of a syringe that is usable with the pipette.

Abstract: Described are exemplary embodiments of a syringe for use with a handheld positive displacement pipette, the syringe being releasably retainable by the pipette. Syringe embodiments may be configured to hold different material volumes. At least certain syringe embodiments may include a cooperative adapter that is used to releasably couple the syringe to the pipette.

Abstract: Described are exemplary embodiments of a handheld, powered positive displacement pipette assembly, including a plurality of syringes of different volumes and a powered positive displacement pipette having unique mechanisms for the retention, identification and ejection of said syringes.

Abstract: A sub-1 ?L pipette having a small diameter metal tube that is concentrically located within the tip mounting shaft/portion of the pipette and extends from the distal end thereof by some predetermined distance so as to seal against the interior of a pipette tip that is installed to the tip mounting portion. The use of a small diameter metal tube and sealing of the metal tube against the inner surface of the pipette tip near a distal opening of the pipette tip allows for a minimal ullage volume.

Abstract: A pipette calibration and volume offset mechanism. The calibration and volume offset mechanism is provided to facilitate user selectable calibration or volume offset operations of a pipette to which the calibration and volume offset mechanism is installed, through axial displacement of a threaded element that effectively moves the home position of the pipette. An offset counter of the calibration and volume offset mechanism is rotationally coupled to the threaded element during a volume offset operation to indicate offset magnitude, but decoupled from threaded element during a calibration or recalibration operation.

Abstract: A pipette quickset volume adjustment mechanism having various modes of operation. The quickset volume adjustment mechanism provides for easy selection between at least a direct drive mode, and a speed multiplying mode that hastens pipette volume changes. The quickset volume adjustment mechanism incorporates a gear train, the individual gears of which are appropriately and selectively engageable or disengageable to produce the various modes of operation.

Abstract: A pipette home position locating mechanism and a manual pipette equipped with such a home position locating mechanism. The home position locating mechanism is spring-biased but compressible in a proximal-to-distal direction. The spring preload force of the home position locating mechanism is selected to be greater than force of exerted by a stroke spring of the pipette to which the home position locating mechanism is attached while the stroke spring is at its blowout position, but less than the combined force exerted by the stroke spring at its blowout position and a blowout spring of the pipette in its preload position.

Abstract: A pipette check station for checking the calibration or service status of a pipette includes an RFID reader, a user interface with a display and buttons, and a digital interface to connect the check station to additional equipment; the check station optionally further includes provisions to hold pipettes for storage and to charge electronic pipettes held thereupon.