Abstract: Flow cytometer flow cell cuvettes are provided. Aspects of the flow cell cuvettes include a narrowing region having a wide end opposite a narrow end and a flow channel extending from the narrow end of the narrowing region. Aspects of the invention further include flow cytometers including the flow cell cuvettes, and methods of using the same, e.g., in sample analysis.

Abstract: An electrostatic deceleration system is provided for use with a flow cytometer to decelerate the movement of electrically charged droplets formed by the flow cytometer in order to minimize damage to the cells contained in the droplets when the droplets are collected in corresponding collection vessels. The deceleration system includes a plurality of deceleration devices which are each used to decelerate droplets charged to a particular magnitude and polarity. Each deceleration device includes a steering plate arrangement and a deceleration ring arrangement. The steering plate arrangement directs the droplets having a particular magnitude and polarity of charge into the corresponding deceleration ring arrangement. The deceleration ring arrangement includes a plurality of deceleration rings to which are applied electrical potentials of a polarity the same as the polarity of the charged droplet.