G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 30/90 (2006.01)
Patent
CA 2396189
The invention concerns a device for overpressured layer chromatography treatment of a sample comprising a chamber (1) housing a stationary phase (2) provided in a first site (6) with a sample to be treated, means for externally pressurising (8) a top surface (5) of the stationary phase, means for dispensing (10) a mobile phase in a second site (7) of the stationary phase, a mobile phase supply intake (13), and an outlet (18) for discharging the mobile phase outside the chamber. The device further comprises means (23) for feeding the intake (13) with mobile phase, a sensor (29) for measuring the pressure of the mobile phase upstream of the intake, a valve (31) arranged downstream of the outlet for varying the mobile phase flow rate at the chamber outlet, and a module (25) for controlling the valve on the basis of a comparison between the measured pressure and a selected threshold pressure, the valve (31) being open when the measured pressure is not less than the threshold pressure.
Un dispositif de traitement d'échantillon par séparation sous flux forcé comprend une chambre (1) logeant une phase stationnaire (2) pourvue en un premier endroit (6) d'un échantillon à traiter, des moyens de pressurisation externe (8) d'une face supérieure (5) de la phase stationnaire, des moyens de distribution (10) d'une phase mobile en un second endroit (7) de la phase stationnaire, une entrée (13) d'alimentation en phase mobile, et une sortie (18) d'évacuation de la phase mobile hors de la chambre. Le dispositif comprend en outre des moyens (23) d'alimentation de l'entrée (13) en phase mobile, un capteur (29) pour mesurer la pression de la phase mobile en amont de l'entrée, une vanne (31) placée en aval de la sortie pour faire varier le débit de la phase mobile en sortie de la chambre, et un module (25) pour commander la vanne en fonction d'une comparaison entre la pression mesurée et une pression limite choisie, la vanne (31) étant ouverte lorsque la pression mesurée est supérieure ou égale à la pression limite.
Kecskes Laszlo
Mincsovics Emil
Tapa Barnabas
Tyihak Erno
Bionisis S.a.
Fetherstonhaugh & Co.
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