Abstract: A rack robot lifts and transfers sample tube storage racks or plates with a refrigerated enclosure maintained, e.g., at ?20° C. The samples are normally held in ultra-low temperature, e.g., ?80° C., or cryogenic freezers. From time to time, the racks or plates need to be roved from the ultra-low temperature or cryogenic freezers for processing and the rack robot transfers the racks or plates to the various processing stations within the refrigerated enclosure, such as tube picking, barcode reading, or frost removal stations.

Abstract: A pipette device including a metering liquid receptacle designed to be filled, at least in part, with working fluid and which has a pipette opening as a first tapering of cross-section of flow, a pressure change device which is designed to change the pressure of the working fluid in the metering liquid receptacle, and a throttle point in a pipette duct designed to be filled with working fluid as a further tapering of cross-section of flow. The throttle point is arranged fluid-mechanically between the metering liquid receptacle and the pressure change device and is dimensioned in such a way that a ratio of a flow resistance of the pipette opening for dispensed metering liquid to a flow resistance of the throttle point for working fluid, which flows through the throttle point when the metering fluid is dispensed, is less than 0.5.

Abstract: Pipette device (10), at least for dispensing metering liquid by increasing the pressure of a working fluid, comprising a metering liquid receptacle (38) which is filled, at least in part, with working fluid and has a pipette opening (36) as a first tapering of cross-section of flow, through which metering liquid can be dispensed from the metering liquid receptacle (38) as a function of the pressure of the working fluid, and comprising a pressure change device (40) which is designed to change the pressure of the working fluid in the metering liquid receptacle (38), wherein the pipette device (10) comprises a throttle point (42) in a pipette duct (12) filled with working fluid during normal operation as a further tapering of cross-section of flow, said throttle point being arranged fluid-mechanically between the metering liquid receptacle (38) and the pressure change device (40) and being dimensioned in such a way that a ratio of a flow resistance (R1) of the pipette opening (36) for dispensed metering liquid t