Skip to content

OxyGuard Handy Polaris 2 Dissolved Oxygen Meter


The OxyGuard Handy Polaris 2 is a portable dissolved oxygen (D.O.) meter that combines the features of the original Polaris with the convenience of data logging and data transfer capability. It measures % saturation, mg/L (ppm) and temperature and has salinity compensation. Measurements are compensated for temperature and barometric pressure. The galvanic probe is fully field-serviceable. Powered by a 9V battery. The Polaris 2 has a larger display with backlight and offers automatic calibration, and a choice of language and units of measurement. Includes a detachable clip for easy attachment to a belt or clipboard.


  • Automatic calibration with stability check.
  • Automatic self-check of instrument
  • Automatic check of cable and probe.
  • Compensates for changes in atmospheric pressure.
  • User selectable language and main display parameter.
  • "On-screen" instructions.
  • Waterproof.
  • 1400 hours use from one 9V alkaline battery.
  • Illuminated display with variable intensity.
  • Data Logging functions.
  • Automatic shutdown for power saving.


  • Galvanic type.
  • Self-Polarizing.
  • No warm up time.
  • Fully temperature compensated.
  • Remarkably short response time.
  • Stores dry.
  • Excellent long-term stability.
  • Tough membrane.
  • No need for regular service or renovation.
  • Probe renovation easy and fast when needed.
  • Spares available at very low price.
Parameters: ppm (mg/l), saturation, temperature (°C or °F), salinity compensation.
Display: Large, easy to read graphical LCD display. Variable backlight.
Probe Type: Galvanic cell, self polarizing, self temperature compensating.
Cable Length: Cable Length: Standard 3 m. Any length available on request.
Operating Conditions: Probe: -5 to +45°C, meter -20 to +60°C.
Encapsulation (meter): Short-term immersion proof to max. 5m depth.
Measuring Range: 0-60.0 ppm (mg/l) and 0-600% saturation. Automatically compensated for temperature and barometric pressure. Manual salinity compensation.Temperature -5 to +45°C.
Salinity Compensation: 0-59 ppt salinity (manually set).
Accuracy: Depends on calibration accuracy. Typically better than +/-1% of measured value +/-1 digit within the standard measuring range.
Repeatability: Typically better than +/- 0.5% of measured value.
Response Time: 90% of end value in less than 20 seconds in water.
Accuracy, Temperature: +/- 0.2°C.
Datalog Capacity: Over 3000 sets of complete information (mg/l, %sat, temperature, events etc.)
Dimensions: 98 mm diameter x 36 mm + belt clip (if used).
Self-check of: Probe function, meter function, cable, battery.
Useful battery life: Approx. 2 years with 1 hour's use per day, 5 months with 8 hours use per day.
Standard Accessories: Membranes with O-rings, electrolyte, cathode cleaning pad, storage pouch.

    UK Shipping

    Royal Mail 24 / Royal Mail 48
    This service can take up to five working days although typically most items are delivered within two working days. We can only ship some of our smaller products via this service

    Royal Mail Tracked 24 / Tracked 48
    This service can take up to five working days although typically most items are delivered within two working days. We can only ship some of our smaller products via this service. This is s tracked service, and does not require a signature.

    DHL Express / Menzies
    We offer next day as standard for our stock items with our logistics partner DHL. Tracking and shipping notifications will enable you to know when you parcel is out for delivery.

    Please note we try to keep all products in stock, however at times out of stocks cannot be avoided. We will always email you updates on your orders status to keep you fully informed.

    International Shipping

    Royal Mail International Tracked
    This service can take 5-10 days dependant on your location. This is a tracked service for small, lower value items

    DHL Economy
    This service is for most countries in mainland Europe. Delivery is 2-7 days dependant on your location.

    DHL Express
    This services can take 2-7 days dependant on your location across the globe. Europe is typically 1-2 days from despatch, USA 2-3 days from despatch, Australia 5-7 days from despatch