LaMotte TRACER Dissolved Oxygen Meter – 1761

In stock

This meter measures the dissolved oxygen in water samples and displays it in either saturation percentage or as concentration. It also measures temperature and can test in the field or the lab.

LaMotte TRACER Dissolved Oxygen Meter – 1761


  • Oxygen level is displayed as a Saturation percentage from 0 to 200.0% or as Concentration from 0 to 20.00 ppm (mg/L)
  • Adjustable altitude compensation (0-20,000 ft in 1,000 ft increments)
  • Adjustable salinity compensation from 0 to 50 ppt
  • Temperature measurement from 32°F to 122°F (0 to 50°C)
  • Built-in memory stores up to 25 data sets with Dissolved Oxygen and temperature readings
  • Self-calibration on power up
  • Data hold
  • Auto power off
  • Low battery indicator
  • Comes complete with:
    • Dissolved oxygen electrode
    • Protective sensor cap
    • Spare membrane cap
    • Electrolyte
    • Four 1.5V SR44W batteries
    • 48” (1.2m) neck strap
  • Ideal for use in the field or the laboratory

This meter measures the dissolved oxygen of a water sample in a very non-invasive way as it requires the sensor only to be placed in a sample. This method requires small samples and has almost no effect on a water system. It is great for spot checking fish tanks, ponds, lakes, rivers and practically any other body of water for its dissolved oxygen content.

Dissolved oxygen measurements are an excellent indication of health in a water system. The dissolved oxygen in water is essential for plant and animal life in water and can be supplemented by humans through the use of a bubbler or circulating pump. Low dissolved oxygen readings increase the relative population of anaerobic organisms such as plants and some bacteria, which can potentially result in fish kills.

Dissolved oxygen is a relative measure of the amount of oxygen that is dissolved or carried in a given water sample. As water systems become stagnated or have high decomposition of organic matter the dissolved oxygen level is usually lower. When a body of water is well-mixed and aerated the water will be fully saturated with a reading of approximately 10mg/L.





DO (sat. mode)

0 to 200.0%


±2% FS

DO (conc. mode)

0 to 20.00 ppm (mg/L)

0.01 ppm (mg/L)

0.4 ppm (mg/L)


32 to 122°F
(0 to 50°C)


±1.8°F (1°C)


1.4x6.9x1.6" (36x176x41mm)

Unit Ship Weight: 2 lbs

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