FACILITY FOR POTENTIOMETRIC MEASUREMENTS Russian patent published in 2003 - IPC

FIELD: analyzers of composition of liquid media with use of ion-selective electrode. SUBSTANCE: facility includes input lines of flows connected to cocks, manostats with throttles, two collectors, sample stabilization means formed depending on object of analysis, measurement cell with ion-selective electrode. Valves are placed across outlets from manostats and measurement cell. Control valve comes in the form of ball with conduits for flow inlet, for feed to manostat, for release into drain. All conduits are interconnected in center. Section of conduit for release into drain is at least one and a half times greater than section of conduit for flow inlet. Measurement cell is made up of two chambers for sample intake and chamber housing ion-selective electrode. EFFECT: reduced lag, increased accuracy and widened functional capabilities. 4 dwg