An injector for a fluid delivery system is provided to deliver precise volumes of a plurality of fluids in sequence to a treatment reservoir. The injector is in fluid communication with a positive displacement pump which accepts fluid from a fluid source. The injector includes a spring loaded plunger,...http://www.google.fr/patents/US5095938?utm_source=gb-gplus-shareBrevet US5095938 - Injector for fluid delivery system
