Conductivity and Resistivity Meters (243 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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Conductivity Electrodes (116 companies)
Conductivity electrodes are devices that measure the salinity and conductivity of water samples.
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Density and Specific Gravity Instruments (94 companies)
Density and specific gravity instruments are meters used to determine density and specific gravity.
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Dissolved CO2 Instruments (29 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 (183 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 (108 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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Environmental Test Chambers and Rooms (230 companies)
Environmental test chambers and rooms are used to ensure the reliability of industrial products, especially electronic items, through prolonged exposure to one or more environmental parameters.
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Gas Instruments (760 companies)
Gas instruments detect, monitor or analyze gases present in an environment.
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Groundwater Monitoring Equipment (28 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

Humidity Measurement Instruments (446 companies)
Humidity measurement instruments test for absolute humidity, relative humidity, or dew point in air.
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Humidity Transmitters (123 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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Hydrophones (53 companies)
Hydrophones are underwater acoustic sensors used in marine research, undersea mapping and navigation, and various commercial and military applications.
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Instrument Calibration Services (625 companies)
Instrument calibration services test equipment and calibrate them to various standards.  
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Ion Selective Electrodes (63 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 (82 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 (9 companies)
Leaf wetness sensors are used to detect the presence of surface moisture. Learn more about Leaf Wetness Sensors

Leak Testing Equipment (298 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 (152 companies)
Liquid leak detectors sense when a liquid is leaking from a pipe, tank, or other receptacle.
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Moisture Meters (587 companies)
Moisture meters are used to measure the moisture content in bulk solids, liquids and gases.
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Oil In Water Monitors (55 companies)
Oil in water monitors are used to detect the presence of hydrocarbons in water.
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Oil Sensors and Analyzers (39 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 (66 companies)
Opacity sensors and instruments measure the amount of light transmitted through a sample.
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Oxidation Reduction Potential (ORP) Electrodes (90 companies)
Oxygen reduction potential (ORP) electrodes are analytical sensors for measuring oxidation-reduction potential (ORP).
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pH and Oxidation Reduction Potential (ORP) Instruments (335 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 (176 companies)
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 Transmitters (42 companies)
pH transmitters provide electrical outputs that are proportional to potential of hydrogen (pH) inputs. Learn more about pH Transmitters

Plant Growth Chambers (11 companies)
Plant Growth Chambers are specifically designed to produce environmental conditions to maximize plant growth. Learn more about Plant Growth Chambers

Radiation Detectors (158 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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Refractometers (116 companies)
Refractometers measure the critical angle of refraction through a sample. The critical angle of refraction will change with concentration.
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Scintillation Counters (33 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

Solar Radiation Instruments (44 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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Sound Level Meters and Noise Dosimeters (153 companies)
Sound level meters and noise dosimeters are used in sound and noise analysis. Applications include industrial safety, traffic noise studies, and scientific noise measurement.
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Specialty Environmental Sensors and Instruments (122 companies)
Specialty or proprietary products related to environmental sensors and instruments. Learn more about Specialty Environmental Sensors and Instruments

Temperature Indicators and Temperature Instruments (409 companies)
Temperature indicators and temperature instruments are designed for temperature monitoring and analysis. These devices either come equipped with an integral sensor, or require sensor input.
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Temperature Instruments (2274 companies)
Temperature instruments use contact or noncontact methods to measure temperature. Products include dial, digital, industrial and laboratory thermometers; temperature probes, indicators, and sensors; RTD elements and transmitters; and thermistors, thermocouples, thermopiles, and thermal switches. 
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Thermal Imagers (188 companies)
Thermal imagers detect heat patterns in the infrared wavelength (1 micron to 100 micron) spectrum.
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Titration Instruments (60 companies)
Titration instruments are used to determine the concentration of dissolved substances. Titration is based on a complete chemical reaction between the specific substance, the analyte, and a reagent or titrant of known concentration that is added to the sample.
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Total Organic Carbon (TOC) Analyzers (54 companies)
Total organic carbon (TOC) analyzers measure the amount of total organic carbon present in a liquid sample.
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Turbidity Instruments (155 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 (28 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 (107 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 (247 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 (260 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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