DO600 Waterproof Dissolved Oxygen Meter

The Extech ExStik® II DO600 meter displays oxygen level as a percent of saturation from 0 to 200. 0 percent or concentration from 0 to 20.00 ppm (mg/L). It features Adjustable Altitude Compensation (0 to 20,000 feet in 1,000 ft. increments), Adjustable Salinity Compensation from 0 to 50 ppt and an analogue bar graph for indicating trends. DO600 meter includes a DO electrode, protective sensor cap, spare membrane cap, electrolyte, four 3V CR-2032 batteries, and 48" (1.2m) neckstrap.


  • Oxygen level displayed as % Saturation or Concentration (mg/L [ppm])
  • Adjustable Altitude Compensation (0-20,000ft in 1,000ft increments)
  • Adjustable Salinity Compensation from 0 to 50ppt
  • Analog bar graph indicates trends
  • Memory stores up to 25 data sets with DO and Temperature reading
  • Self-calibration on power up
  • Data Hold, Auto power off, Low battery indicator