Abstract: A reagent module may include a first reagent dispensing device to dispense a first range of volumes of a first reagent, and a second reagent dispensing device to dispense a second range of volumes of a second reagent where the second range of volumes is more voluminous relative to the first range of volumes. The reagent dispensing system may further include a third reagent dispensing device to dispense a third range of volumes of a third reagent where the third range of volumes is more voluminous relative to the second range of volumes.

Abstract: An integrated cartridge service station may include a reagent module comprising at least one reagent ejection device, and a service module integrated with the reagent module. The service module may include at least one service device. The reagent module and the service module are movable with respect to one another within a reagent dispensing system. The at least one reagent ejection device is movable between an in-line position and an off-line position within the reagent dispensing system.

Abstract: A reagent substrate may include a reagent sample deposition area on which a sample of a reagent is deposited, and a number of diagnostic regions on which a diagnostic sample of the reagent is deposited for verification of deposition of the diagnostic sample. A reagent dispensing system may include a conveyor surface to convey a number of substrates, at least one reagent module located in-line with respect to the conveyor surface where the reagent module includes at least one reagent dispensing device to dispense a reagent on the substrates, and at least one optical sensor to verify the dispensing of the reagent at a number of diagnostic regions of the substrate.

Abstract: A reagent dispensing system, in an example, may include a processing device, a data storage device coupled to the processing device, a plurality of swappable reagent modules, each swappable reagent module comprising a plurality of reagent dispensing cartridges, and a module frame coupling the reagent cartridges to one another.

Abstract: A reagent dispensing system may, in an example, include a processing device, a memory device coupled to the processing device, and a plurality of swappable reagent dispensing cartridges wherein a first set of the swappable reagent dispensing cartridges are maintained within a storage device off-line from a second set of swappable reagent dispensing cartridges maintained in-line.

Abstract: A reagent deposition area of a reagent dispensing system may include a dispersion bar located above a conveyor system, and a reagent module coupled to the dispersion bar. The reagent module may include at least one reagent dispensing device to dispense a number of reagents on a substrate carried on the conveyor system, and a module frame electrically and mechanically coupling the reagent dispensing device to the reagent dispensing system. The dispersion bar moves the reagent module in two coordinate directions planar with the surface of the substrate.