dissolved oxygen meters

Hanna pH Sensor

The HI-INT and HI-MULTI are portable or benchtop meters that can support pH, redox, DO and ISE sensors.

Edaphic Scientific’s Dissolved Oxygen (DO) Meter is ideal for rapid assessment of oxygen concentration for wastewater, water quality, aquaculture and scientific research. Our dissolved oxygen (DO) meters are supplied from the world leading manufacturer, Hanna Instruments. Benefits of our dissolved oxygen (DO) meters include:


  • Low cost models for researchers, industry and students
  • Extremely high accuracy of ±1.5% of full scale
  • Temperature and salinity compensation
  • Easy to calibrate and maintain
  • Waterproof handheld meter with rugged carry case
  • Interchangeable or Multi-parameter to models to measure pH, EC, DO, Redox, ISE, temperature, barometric pressure and more…




available models
  • HI-INT – Portable Dissolved Oxygen (DO) Meter with interchangeable sensors (additional sensors include EC, pH and ISE). Product Page Link.
  • HI-MULTI – 3-in-1 Multiparameter Portable Meter to measure pH, EC and DO simultaneously. Product Page Link.
  • DO-AQUA – Portable, Waterproof, Dissolved Oxygen (DO) meter for aquaculture
  • DO-HH – Handheld, Dissolved Oxygen (DO) Meter
  • DO-HH-LC – Low Cost, Handheld Dissolved Oxygen (DO) Meter for students and teaching


  • Data Logging (HI-INT and HI-MULTI models only)

The log-on-demand feature allows users to store up to 300 samples (depending on model) that can be later transferred to a PC with the supplied USB cable and software.

  • Temperature and Salinity Compensation

All DO measurements are corrected for temperature and salinity variations.

  • Automatic Calculations of Multiple Parameters (model dependent)
Dissolved Oxygen Aquaculture

The DO-AQUA is designed for aquaculture applications. This unit is unique among our family of DO meters as it is supplied with a galvanic probe.Unlike polarographic probes, galvanic DO probes require no conditioning time. When you need to measure multiple samples in a given period of time, pick it up and measure on demand.

Built-in calculations for the following parameters: Determination of Biochemical Oxygen Demand (BOD), Oxygen Uptake Rate (OUR) and Specific Oxygen Uptake Rate (SOUR).

  • Calibration

Automatic one or two point at 100% (8.26 mg/L) and 0% (0 mg/L).

  • Easy Maintenance

Sensors are easily cleaned and can be individually replaced at any time. Replacement sensors are available from Edaphic Scientific.

  • Waterproof Meter and Rugged Carrying Case

IP67 environmental protection rated waterproof hand held meter means you will not damage the Portable pH Meter in the field. Transport the Portable ph Meter in a rugged carrying case.

  • AA Battery Operated

The units are powered from 4 x AA batteries for up to 200 hours of battery life.


general specifications of dissolved oxygen (DO) sensor
dissolved oxygen low cost meter

The DO-HH-LC is a low cost, handheld DO meter that is ideal for students and teaching.

Note: precise specifications vary slightly depending on model. See above for model options or contact Edaphic Scientific for more details.

  • Range: DO-HH-LC: 0 to 20 mg/L; DO-HH, DO-AQUA: 0 to 40 mg/L; HI-INT, HI-MULTI: 50.00 mg/L (ppm);
  • Resolution: 0.1 mg/L (ppm); 0.01 mg/L (ppm);
  • Accuracy: ±1.5% of full scale
  • Calibration: Automatic one or two point at 100% (8.26 mg/L) and 0% (0 mg/L); DO-HH-LC: manual
  • Temperature Compensation: automatic or manual from -20.0 to 120.0°C
  • Salinity Compensation: manual