An ozone sensor includes a hollow housing having an inlet and an outlet. The hollow housing defines an internal cavity that is adapted to receive water from the inlet and discharge water through the outlet. The internal cavity can be defined by a bottom wall, a top wall and sidewall. An electrode includes a working electrode, a counter electrode, and a reference electrode. The electrode assembly positioned in the cavity such that the reference electrode is below the inlet and outlet when to ozone is incorporated in a water line such that the hollow housing retains water.

An ozone sensor includes a hollow housing having an inlet and an outlet. The hollow housing defines an internal cavity that is adapted to receive water from the inlet and discharge water through the outlet. The internal cavity can be defined by a bottom wall, a top wall and sidewall. An electrode includes a working electrode, a counter electrode, and a reference electrode. The electrode assembly positioned in the cavity such that the reference electrode is below the inlet and outlet when to ozone is incorporated in a water line such that the hollow housing retains water.

This invention is to provide an electrode device whose manufacturing cost is suppressed and whose surface is difficult to be polluted. The electrode device comprises an internal electrode, an enclosure that houses the internal electrode, an internal solution that is housed in the enclosure and that electrically communicates a liquid junction formed in the enclosure or a response glass that forms a part or all of the enclosure with the internal electrode, and an antifouling mechanism that has a light source to irradiate ultraviolet rays on a sample contact surface of the enclosure as being a surface that makes contact with a sample and that prevents the sample contact surface of the enclosure from being polluted, and the light source is directly or indirectly mounted on an outside of the enclosure, or the light source is housed inside of the enclosure.

This disclosure provides techniques for extending useful life of a reference electrode, as well as a novel voltametric system and measurement cell design and related chemistries. An automated, repeatable-use system features a reference electrode that directly immerses a metallic conductor into an analyte, with electrolytes (e.g., chlorides) used for measurement being separately added and removed for each measurement cycles; the metallic conductor can optionally be left exposed to clean dry air in between measurements. In one implementation, the system can be restricted to application with specific analytes (e.g., ground water) that are known in advance to be free of substances that could degrade reference electrode use or lifetime. Cleaning solutions can optionally be used that would not be practical with conventional (insulated) reference electrode designs. In another embodiment, a measurement cell can be configured to receive separated electrode modules, permitting independent cleaning/removal of the working electrode (or other electrodes).

This disclosure provides techniques for extending useful life of a reference electrode, as well as a novel voltametric system and measurement cell design and related chemistries. An automated, repeatable-use system features a reference electrode that directly immerses a metallic conductor into an analyte, with electrolytes (e.g., chlorides) used for measurement being separately added and removed for each measurement cycles; the metallic conductor can optionally be left exposed to clean dry air in between measurements. In one implementation, the system can be restricted to application with specific analytes (e.g., ground water) that are known in advance to be free of substances that could degrade reference electrode use or lifetime. Cleaning solutions can optionally be used that would not be practical with conventional (insulated) reference electrode designs. In another embodiment, a measurement cell can be configured to receive separated electrode modules, permitting independent cleaning/removal of the working electrode (or other electrodes).

The present invention, in one set of embodiments, provides methods and systems for integrating conducting diamond electrodes into a high power acoustic resonator. More specifically, but not by way of limitation, in certain embodiments of the present invention, diamond electrodes may be integrated into a high power acoustic resonator to provide a robust sensing device that may provide for acoustic cleaning of the electrodes and increasing the rate of mass transport to the diamond electrodes. The diamond electrodes may be used as working, reference or counter electrodes or a combination of two or more of such electrodes. In certain aspects, the high power acoustic resonator may include an acoustic horn for focusing acoustic energy and the diamond electrodes may be coupled with the acoustic horn.

The present invention, in one set of embodiments, provides methods and systems for integrating conducting diamond electrodes into a high power acoustic resonator. More specifically, but not by way of limitation, in certain embodiments of the present invention, diamond electrodes may be integrated into a high power acoustic resonator to provide a robust sensing device that may provide for acoustic cleaning of the electrodes and increasing the rate of mass transport to the diamond electrodes. The diamond electrodes may be used as working, reference or counter electrodes or a combination of two or more of such electrodes. In certain aspects, the high power acoustic resonator may include an acoustic horn for focusing acoustic energy and the diamond electrodes may be coupled with the acoustic horn.

An electrochemical cell comprises a chamber, an inlet port, an outlet port, an electrode port, and a counter electrode. The inlet port is configured to allow flow of a liquid into the chamber and through an inlet opening toward the working electrode, and the outlet port is configured to allow flow of a liquid out of the chamber and through an outlet opening. The device is configured so that a force applied to the working electrode slides the first end face of the working electrode to a distance from a face of the inlet opening due to the balancing force of a fluid flowing out of the inlet opening. The device may be used in a method for analyzing an analyte, such as one or more amino acids in a liquid sample.

The in-vivo component measuring apparatus 1 for measuring components contained in interstitial fluid collected from a subject is provided. The apparatus includes a setting unit in which is installed an interstitial fluid collector that collects interstitial fluid, a glucose sensor for acquiring a signal reflecting the amount of the measurement target component contained in the interstitial fluid when in a state of contact with the interstitial fluid collector, and a moving unit that brings the glucose sensor into contact with the interstitial fluid collector installed in the setting unit by changing the relative position between the setting unit and the glucose sensor to a predetermined positional relationship.

A potentiometric sensor for determining pH, comprising a shaft tube and a glass membrane. The shaft tube and the glass membrane form a first chamber in which an inner electrolyte of the sensor and a discharge element of the sensor are positioned. The sensor also includes a reference element and a reference electrolyte outside the first chamber. The glass membrane and/or a transition region adjoining the glass membrane is produced by a generative process to form a connection between the shaft tube and the glass membrane of the sensor.