Patent ID: 8640730
Filing Date: 2014-02-04
Classification: G01N,Y10T

Abstract:
1. A fluid-controller apparatus comprising: a pump-fluid reservoir for containing a pump fluid; a pumping device connected to the pump-fluid reservoir for pumping the pump fluid; at least one variable-restriction device connected to the pumping device, the at least one variable-restriction device comprising a temperature-controlled restriction element, wherein, when the pumping device is operated, the pumping device causes the pump fluid to flow through the at least one variable-restriction device; at least one solvent-fluid reservoir, for containing a solvent fluid comprising at least one solvent, connected to the at least one variable-restriction device; and a chromatographic column in fluidic communication with the at least one variable-restriction device to receive the solvent fluid displaced by the pump fluid in relation to restriction provided by the at least one variable-restriction device.