Abstract: An installation for treating samples by chromatographic separation comprises: i) means (1, 2, 4) for feeding moving phase, means (14) for supplying samples, and a multiplicity of injector means (10-i), each comprising a first inlet (11-i) for receiving a sample, a second inlet (8-i) connected to the feed means, and an outlet (13-i) for delivering the moving phase and/or the sample; ii) a stationary phase (3) defining a multiplicity of sample treatment channels (12-i), each starting at a first selected location (19-i) and terminating at a second selected location (20-i); and iii) a chamber (17) housing the stationary phase (3) and including pressurizing means for applying an external pressure to one face of the stationary phase, a multiplicity of inlets, each connected to the outlet (13-i) of an injector (10-i) to deliver the moving phase and/or the samples to the first locations (19-i), and a multiplicity of outlets (18-i) for discharging the multiplicity of samples treated in the channels (12-i) that have re

Abstract: Apparatus for separating the components of a sample by OPLC type chromatography using liquid under pressure, the apparatus comprises a stationary phase forming one or more sample treatment paths and means for feeding moving phase to one end of the stationary phase, with means at the opposite end of the stationary phase for collecting moving phase, means for injecting moving phase also being provided at the sides of the stationary phase in order to eliminate edge effects in the fronts of sample components and in order to separate treatment paths from one another.

Abstract: Apparatus for treating a sample by pressurized planar separation comprises a chamber (1) housing a stationary phase (2) provided at a first location (6) with a sample to be treated, pressurization means (8) for pressurizing a top face (5) of the stationary phase, dispenser means (10) for dispensing a moving phase at a second location (7) of the stationary phase, a feed inlet (13) for feeding the moving phase, and a removal outlet (18) for removing the moving phase from the chamber. The apparatus also comprises feed means (23) for feeding the inlet (13) with moving phase, a sensor (29) for measuring the pressure of the moving phase upstream from the inlet, a valve (31) placed downstream from the outlet to vary the flow rate of the moving phase leaving the chamber, and a module (25) for controlling the valve as a function of a comparison between the measured pressure and a selected threshold pressure, the valve (31) being opened when the measured pressure becomes greater than or equal to the threshold pressure.