Apparatus, methods and processes for sorting particles and for providing sex-sorted animal sperm

Abstract From the Canadian patent

A flow cytometry apparatus nozzle to sort sperm cells in a fluid stream by chromosome content comprising: a. a nozzle body having a fluid stream entry portion and a fluid stream exit portion and an interior surface separating both portions and along which a fluid stream is adapted to flow; b. the interior surface of the nozzle including a first a second and a third axially tapered region for progressively accelerating the speed of a fluid stream in a downstream direction toward the exit portion at least two of the regions having generally elliptical cross sectional shapes oriented in different directions for applying torsional forces to a fluid stream passing therethrough tending to bring …