An injection device (10) includes a carrier inlet (40), a sample inlet (46), waste outlet (44) and a chamber outlet (64) attached to separation column (66). Valves (52, 54, 56) are used to control flow such that sample flows into chamber (22) and is carried into the chamber outlet (42)....http://www.google.com.au/patents/US8173070?utm_source=gb-gplus-sharePatent US8173070 - Sample injector system for liquid chromatography
