Conductivity Electrodes (110 companies)
Conductivity electrodes are devices that measure the salinity and conductivity of water samples.
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Conductivity Meters (227 companies)
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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Dissolved CO2 Instruments (23 companies)
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 (168 companies)
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 (100 companies)
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 (353 companies)
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 (59 companies)
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 (80 companies)
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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Olfactory Sensors and Instruments (Enoses) (16 companies)
Olfactory sensors and instruments (enoses) consist of a gas sampling apparatus and an array of gas sensors that can detect the signature or fingerprint of an odor or aroma. Learn more about Olfactory Sensors and Instruments (Enoses)

pH and Oxidation Reduction Potential (ORP) Instruments (309 companies)
pH and oxidation reduction potential (ORP) instruments measure or monitor pH (relative concentration of hydrogen ions [H+] in a solution) as well as ORP.
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pH Electrodes and ORP Electrodes (163 companies)
pH electrodes and oxygen reduction potential (ORP) electrodes measure the voltage across a circuit formed by the measuring metal half-cell and the reference half-cell.
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Smoke Detectors (181 companies)
Smoke detectors are designed to sense the products of combustion. Common types include ionization chambers and photoelectric devices.
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