Apparatus is provided for detection of viable and potentially hazardous biological particles in a population which may be dispersed in fluid flow. The particles are characterized as biological and viable by contacting particles with laser light from a laser diode and then looking for the emission of...http://www.google.com.au/patents/US20030098421?utm_source=gb-gplus-sharePatent US20030098421 - Laser diode-excited biological particle detection system
