Extech DO700 Portable Dissolved Oxygen Meter

additational features Extech DO700:

  • 9 by 1 meter with laboratory performance.
  • Single point conductivity calibration.
  • Automatic temperature compensation.

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Extech DO700 Portable Dissolved Oxygen Meter

The concentration of dissolved oxygen in aquatic settings, such as seas, rivers, pools, and groundwater, is measured using a portable instrument called the “Portable Dissolved Oxygen Meter” (Extech DO700 ). It measures the amount of dissolved oxygen in the water using an electrochemical sensor.

product overview

The 9-in-1 DO700 Kit also detects temperature, conductivity, TDS, salinity, pH, and mV in addition to DO concentration and saturation. For DO readings, it has both automated salinity correction and manual barometric pressure correction.

Additionally, it has automated temperature adaptation and simple one-button calibration of 4, 7, and 10 pH with the option of three-point calibration for greater precision. complete with batteries, durable carrying bag, pH and conductivity calibration solutions, polymer conductivity cell, pH/mV/Temp electrode, and DO probe.

functions Extech DO700 Portable Dissolved Oxygen Meter

This device works like this
The electrochemical sensor in this device measures the changes in electric voltage caused by the combination of oxygen and electrolyte in water using the electrodes it is equipped with.


This device is primarily used in a variety of sectors, including those that deal with water and sewage, chemicals, food, fisheries, aquaculture, the environment, and scientific research. Additionally, this apparatus is used in natural settings, such as in investigations into the chemical composition of water and how it affects aquatic habitats, in investigations into the growth and reproduction of fish and other aquatic animals, in investigations into aquatic ecosystems, and related investigations into environmental pollution and water quality.

Extech DO700 Portable Dissolved Oxygen Meter features

  • Certifications: CE
  • Dimensions: 4.7 × 2.6 × 1.2″ (120 × 65 × 31mm)
  • IP Rating: IP57
  • Power: 2 × AA (1.5V) batteries
  • Warranty: 2 years
  • Weight: 6.3oz (180g)

Extech DO700 Portable Dissolved Oxygen Meter specifications

  • Conductivity: 0.00 to 199.9mS
  • Conductivity Basic Accuracy: ±1.5%FS
  • Conductivity Max Resolution: 0.01µS
  • Dissolved Oxygen (Concentration): 0 to 40.00mg/L
  • Dissolved Oxygen (Concentration) Basic Accuracy: ±1.5%FS
  • Dissolved Oxygen (Concentration) Max Resolution: 0.01mg/L
  • Dissolved Oxygen (Saturation): 0 to 200.0%
  • Dissolved Oxygen (Saturation) Basic Accuracy: ±1.5%FS
  • Dissolved Oxygen (Saturation) Max Resolution: 0.10%
  • ORP: -1999 to + 1999mV
  • ORP Basic Accuracy: ±0.15mV
  • ORP Max Resolution: 1mV
  • pH: -2.00 to 19.99pH
  • pH Basic Accuracy: ±0.02pH
  • pH Max Resolution: 0.01pH
  • Resistivity: 0 to 100M cm
  • Resistivity Basic Accuracy: ±1.5%FS
  • Resistivity Max Resolution: 0.1
  • Salinity: 0 to 100ppt
  • Salinity Basic Accuracy: ±1.5%FS
  • Salinity Max Resolution: 0.01ppt
  • TDS: 0 to 100g/L
  • TDS Basic Accuracy: ±1.5%FS
  • TDS Max Resolution: 0.01mg/L
  • Temperature (Contact): pH/ORP: 32 to 122°F (0 to 50°C); 32 to 212°F (0 to 100°C)
  • Temperature (Contact) Basic Accuracy: ±1°F/±0.5°C
  • Temperature (Contact) Max Resolution: 0.1°
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EXTECH meters and testers help you ensure uptime, maximize productivity and verify compliance. Whether used as a component of an effective predictive maintenance program or as a key tool for a rapid response repair team, EXTECH instruments are the meters of choice for professionals who need to solve problems. Extech continues to build brand loyalty and trust among electrical contractors, industrial mechanics, facilities maintenance, HVAC/R technicians, sustainability & safety directors, public works managers, building & restoration contractors, and more. Extech products are backed with a standard full 2-year warranty, and select products up to 3 years, against defects.