Extech Waterproof 8 in 1 Dissolved Oxygen Kit – DO700

In stock

This waterproof dissolved oxygen kit features 8 in 1 testing. Able to test dissolved oxygen, pH, mV, conductivity, TDS, salinity, resistivity and temperature.

Extech Waterproof 8 in 1 Dissolved Oxygen Kit – DO700

8 in 1 meter measures dissolved oxygen concentration/saturation, pH, mV, Conductivity, TDS, Salinity, Resistivity and Temperature


  • Automatic salinity compensation and manual barometric pressure compensation for DO measurements
  • Waterproof housing (meets IP57) design and large blue backlit dual LCD display
  • Choice of 3 point pH calibration for better accuracy
  • Automatic Temperature Compensation
  • One point Conductivity calibration – automatically recognizes 8 calibration solutions
  • Memory stores up to 400 labeled readings
  • Auto power off with disable function
  • Comes complete with:
    • Dissolved oxygen probe with 3 membrane caps and DO internal fill solution (30mL)
    • pH/mV/Temperature electrode
    • Polymer conductivity cell
    • pH calibration solutions (4, 7, and 10pH)
    • Conductivity calibration solution (1413μS)
    • 2 AA batteries
    • Hard carrying case
  • 1 year warranty (meter)/ 6 months conditional warranty (electrode)

This versatile meter measures dissolved oxygen concentration and saturation, pH, mV, Conductivity, TDS, Salinity, Resistivity and Temperature all in one easy to use meter. This meter is great for laboratory testing as well as river, lake and pond water testing.

DO700data2This meter is also great for testing drinking water and aquariums for pH and dissolved oxygen levels. This meter comes with everything needed to start testing for these 8 parameters. The DO700 Waterproof 8 in 1 Dissolved Oxygen Kit User Manual is attached to this page to answer any additional questions.


  • Dissolved Oxygen Concentration: 0 to 40.00mg/L; Saturation: 0 to 200.0%
  • pH: -2.00 to 19.99pH
  • mV: -1999 to + 1999mV
  • Conductivity: 0.00 to 199.9mS
  • TDS: 0 to 100g/L
  • Salinity: 0 to 100ppt
  • Resistivity: 0 to 100MΩ ⋅ cm
  • Temperature: 32 to 212°F (0 to 100°C), pH and mV 32 to 122°F (0 to 50°C), all other ranges
  • Resolution: 0.01m/gL, 0.1%, 0.01pH, 1mV, 0.01μS, 0.1°
  • Accuracy: ±0.02pH; ±0.15mV; ±1.5%FS; ±1°F/±0.5°C
  • Power: Two AA batteries
  • Dimension: Meter: 4.7 x 2.6 x 1.2" (120 x 65 x 31mm) Kit: 14 x 10.75 x 3” (355.6 x 273 x 76.2mm)
  • Weight: Meter: 6.3oz (180g) Kit: 3.75lbs (1.7kg)

Unit Ship Weight: 4 lbs

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