Conductivity Electrodes (110 companies)
Conductivity electrodes are devices that measure the salinity and conductivity of water samples.
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Conductivity Meters, Dissolved Solids Meters and Resistivity 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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Groundwater Monitoring Equipment (27 companies)
Groundwater monitoring equipment includes pumps and other instruments that tap into the water table for water quality assessment, testing for pollutants, and the identification of other compounds. Learn more about Groundwater Monitoring Equipment

Gas and Air Instruments (735 companies)
Gas and air instruments detect, monitor or analyze gases present in an environment.
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Humidity Measurement Instruments (431 companies)
Humidity measurement instruments test for absolute humidity, relative humidity, or dew point in air.
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Humidity Transmitters (114 companies)
Humidity transmitters provide electrical outputs that are proportional to humidity inputs. They measure variables such as relative humidity, absolute humidity, specific humidity, moisture content, dew point, temperature, and pressure.
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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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Leaf Wetness Sensors (7 companies)
Leaf wetness sensors are used to detect the presence of surface moisture. Learn more about Leaf Wetness Sensors

Leak Testing Equipment (292 companies)
Leak testing equipment is used to measure the escape of liquids, vacuum or gases from sealed components or systems.
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Liquid Leak Detectors (144 companies)
Liquid leak detectors sense when a liquid is leaking from a pipe, tank, or other receptacle.
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Moisture Meters (563 companies)
Moisture meters are used to measure the moisture content in bulk solids, liquids and gases.
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Oil In Water Monitors (50 companies)
Oil in water monitors are used to detect the presence of hydrocarbons in water.
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Oil Sensors and Analyzers (37 companies)
Oil sensors and oil analyzers are used in automotive or industrial machinery applications to sense oil levels, and check for contamination, and particulates, viscosity and/or temperature. Learn more about Oil Sensors and Analyzers

Opacity Sensors and Instruments (64 companies)
Opacity sensors and instruments measure the amount of light transmitted through a sample.
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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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pH Transmitters (37 companies)
pH transmitters provide electrical outputs that are proportional to potential of hydrogen (pH) inputs. Learn more about pH Transmitters

Radiation Detectors (155 companies)
Radiation detectors are used for medical diagnoses, radioactive dating measurements, and measurements of background radiation, activity levels and radiation doses.
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Scintillation Counters (32 companies)
Scintillation counters are used to detect gamma, x-ray and neutron radiation. They consist of a detector for sensing incident radiation and a photomultiplier for producing countable pulses. Learn more about Scintillation Counters

Seismic Instruments (24 companies)
Seismic instruments are used to measure low frequency ground motion caused by earthquakes. Learn more about Seismic Instruments

Solar Radiation Instruments (41 companies)
Solar radiation instruments measure the spectral range of radiation, including global solar radiation (sun + sky), net radiation (incoming solar - reflected solar) and the photosynthetic light spectrum.
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Specialty Environmental Sensors and Instruments (118 companies)
Specialty or proprietary products related to environmental sensors and instruments. Learn more about Specialty Environmental Sensors and Instruments

Total Organic Carbon (TOC) Analyzers (49 companies)
Total organic carbon (TOC) analyzers measure the amount of total organic carbon present in a liquid sample.
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Turbidity Instruments (147 companies)
Turbidity instruments measure the average volume of light scattering over a defined angular range. Both particle size and concentration of suspended solids as well as dissolved solids can affect the reading.
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Volatile Organic Compounds (VOC) Analyzers (25 companies)
Volatile organic compound (VOC) analyzers are used to detect concentrations of heavy hydrocarbons in gas or liquid media. Learn more about Volatile Organic Compounds (VOC) Analyzers

Water Quality Photometers and Colorimeters (105 companies)
Water quality photometers and colorimeters are ion-specific, computer-interfaced probes that are designed to determine the concentration of a solution from its color intensity.
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Water Quality Testing Instruments (239 companies)
Water quality testing instruments are used to test water for chemical and biological agents, and to measure variables such as clarity and rate of movement.
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Weather Instruments (252 companies)
Weather instruments are designed to measure one or multiple components of weather including wind speed and direction, rain or snow fall, solar radiation, temperature, pressure and humidity.
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