Abstract: An analyzer having an inner chassis surrounded by a housing includes sample and dilution probes, a mixing housing including first and second mixing chambers, a flow cytometer including a flow cell, and sample and sheath pumps configured to perform first and second pluralities of tasks, respectively. The first plurality of tasks includes: aspirating sample into the sample probe, dispensing sample from the sample probe into the first and second mixing chambers, delivering first sample-dilution fluid mixture to the flow cell, and delivering second sample-dilution fluid mixture to the flow cell. The second plurality of tasks includes: dispensing sheath to the flow cell in cooperation with the delivery of the first sample-dilution fluid mixture to the flow cell, and dispensing sheath to the flow cell in cooperation with the delivery of the second sample-dilution fluid mixture to the flow cell.

Abstract: A fiber optic finger light for use by pilots, navigators and aircraft crew during night flying, which fiber optic finger light includes, in a most preferred embodiment, green and red light-omitting diodes (LED) mounted in a housing adapted for strapping to one hand and operated by a 3-position switch. A lens is mounted forwardly of each of the light-emitting diodes and serves to selectively focus light from the light-emitting diodes on one end of one of a pair of light-transmitting fibers which extend through the housing and project from the housing in a flexible duplex fiber optic cable. The light housing is strapped to the wrist and the fiber optic duplex cable is strapped to a finger, such that red or green light emitted from the LED at the opposite end of the optic fiber by manipulation of the switch, may be focused on charts, instruments check lists and the like, in the aircraft.