20150047422 | INTRODUCING SAMPLES INTO SUPERCRITICAL FLUID CHROMATOGRAPHY SYSTEMS - A supercritical fluid chromatography system is provided with an injection valve subsystem for introducing a sample into a flow of mobile phase fluid. The injection valve subsystem includes an auxiliary valve and an inject valve. The operations of the auxiliary and inject valves are coordinated in such a manner as to reduce sample carry-over and system pressure perturbations occurring during sample injection. | 02-19-2015 |