PH SENSOR

• Main Authors: CHO, SUNG KWON, CLARK, WILLIAM WALKER
• Format: Patent
• Language: English; French
• Published: 26.05.2011
• Subjects: CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE; DIAGNOSIS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEDICAL OR VETERINARY SCIENCE; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PHYSICS; SURGERY; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TESTING; TRANSPORTING

A pH sensor includes an enclosed fluidic channel, an electrolyte solution within the fluidic channel, a first electrode exterior to the fluidic channel, a second electrode within the fluidic channel, a liquid junction extending between the fluidic channel and an exterior of the fluidic channel. The liquid junction is adapted to provide fluid connection between the electrolyte solution within the fluidic channel and an exterior of the fluidic channel. The pH sensor further includes a fluidic switch or fluidic controller in operative connection with the liquid junction to control whether the liquid junction provides fluid connection between the electrolyte solution within the fluidic channel and the exterior of the fluidic channel.