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: A novel rack for holding test tubes, elongated objects and the like in an upright position. The rack is formed in a one-piece construction having upper and intermediate panels, both panels having holes which are aligned with one another to receive tubes passing through both panels. The holes securely retain the tubes upright and separate from each other during shipping and dispensing by means of easily deformable holes having integral slits radiating from each hole. The carton is lightweight, collapsible and can be easily scored and recycled.

Abstract: A pipette tip rack system is disclosed that includes a plurality of tip racks that may be nested one upon the other with an integrally formed locking mechanism that locks each rack to the one immediately below it. A cover member is also included that acts as a cover for the top rack in the stack. This cover also utilizes the same locking mechanism. Also included is a bottom member that serves as a dust cover and uses the same locking mechanism to permit its fixture to the bottom rack. The whole system when lockingly fixed together forms a relatively secure unit so that if it is upset the tips will not spill out. Further, each element in the stack retains its sterile condition. Finally, the stack of racks may be combined with a box having a top that fits over the cover and a bottom that receives the bottom member and lowest rack. This box may be removed from the stack and assembled so that a single rack may be used remote of the stack.