Patent ID: 7997297

Claim:
A system for performing parallel chemical experiments, said system comprising an array of parallel flow through reactors each comprising a reaction chamber, a reactor inlet and a reactor outlet connected to the reactor chamber, wherein downstream of each reactor an individual active pressure regulating arrangement is provided for actively regulating the reactor pressure, the pressure regulating arrangement comprising an actively tunable passage for reactor effluent with an inlet connected to the reactor outlet and an outlet for discharging reactor effluent at a reduced pressure with respect to the reactor pressure; wherein the active pressure regulating arrangement comprises an actively tunable passage arranged at the passage for reactor effluent of each reactor, wherein the actively tunable passage has a movable member to cause variations of the effective cross-section of the passage, wherein the movable member is in contact with a common pressure chamber which is filled with a control gas, such that the movable member is moved towards the closed position if the reactor pressure is lower than the control gas pressure and is moved towards the open position if the reactor pressure exceeds the control gas pressure, and wherein the system further comprises a pressure controller to control the pressure of the control gas in the pressure chamber.