A wide classification of sensors that are used to analyze material samples, or their components, and record data specific to the application.

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Conductivity meters, dissolved solids meters, and resistivity meters are analytical instruments that measure the conductivity, dissolved solids, and/or resistivity of a liquid sample.
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Conductivity electrodes are devices that measure the salinity and conductivity of water samples.
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Dissolved CO2 instruments are analytical devices that measure the amount of carbon dioxide (CO2) dissolved in a liquid sample such as water. They typically include a submerged probe that is covered by a thin organic membrane.
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Dissolved oxygen meters are analytical instruments that are used to measure the amount of oxygen dissolved in a liquid sample.
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Dissolved oxygen sensors are used to measure the amount of oxygen dissolved in a unit volume of water. In water quality applications, such as aquaculture (including fish farming) and wastewater treatment, the amount of dissolved oxygen (DO) must be kept high.
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Gas Sensors (574 suppliers)

Gas sensors interact with a gas to initiate the measurement of its concentration. The sensor then provides output to an instrument to display the measurements.
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Ion selective electrodes measure the potential of a specific ion in solution. This potential is measured against a stable reference electrode of constant potential.
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Ion specific electrode meters are millivolt meters that interface with ion selective electrodes (ISEs). These meters take the potential generated by the electrode and convert it into units of concentration.
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Oxygen reduction potential (ORP) electrodes are analytical sensors for measuring oxidation-reduction potential (ORP).
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Oxidation reduction potential (ORP) instruments measure or monitor ORP in solution.
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pH Electrodes (199 suppliers)

pH electrodes are analytical sensors for measuring potential of hydrogen (pH), the negative logarithm of the hydrogen ion activity in solution.
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pH Instruments (416 suppliers)

pH instruments are used to measure or monitor potential of hydrogen (pH) in a solution.
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Smoke Detectors (274 suppliers)

Smoke detectors are designed to sense the products of combustion. Common types include ionization chambers and photoelectric devices.
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