The Tablet Dissolved Oxygen Meter EZL-DOM121 measures dissolved oxygen in mg/L, ppm, or % saturation. It has a water-resistant touch screen display, a user-friendly tablet design, and the ability to switch between bench, compact, and wall mount options. Providing a DO range of 0.00 to 20 mg/L (ppm), resolution of 0.01/0.1 ppm, temperature accuracy of 5 °C to 60 °C: ± 0.5 °C and others ± 1.0 °C, and a temperature measuring range of 0 °C to 100 °C supplied with DO electrode with temperature sensor.

Parameters Concentration, Saturation, Temperature
DO Range 0.00 to 20 mg/L (ppm)
Resolution 0.01/0.1
DO Accuracy ± 0.3 % , ± 0.4 mg/L
DO Saturation 0.0 to 200 %
Saturation Resolution 0.001
Saturation Accuracy ± 2.0 % FS
Temperature Measuring Range 0 °C to 100 °C
Temperature Resolution 0.1 °C
Temperature Accuracy 5 °C to 60 °C : ± 0.5 °C Others: ± 1.0 °C
Temperature Compensation Range 0 °C to 100 °C (Automatic)
Salinity Compensation Range 0.0 to 50.0 g/L
Air Pressure Compensation Range 80 kPa to 105 kPa (Automatic)
Air Pressure Resolution 1
Air Pressure Accuracy ± 2 %
Stability ± 0.07 mg/L/1h
Response Time ≤ 30 s (25 °C, 90 % Response)
  • 5-inch LCD screen with wide 150° viewing angle
  • Compact bench cradle
  • Rotary electrode holder
  • Small and compact size, easy to carry and remove
  • Different electrodes can be installed (pH, Conductivity and DO measurement)
  • Auto-recognition of different electrodes
  • 3.5 mm jack input for electrode connection
  • 2 USB and 1 SD card interfaces for power and data transfer
  • Data storage 300 sets
  • Rechargeable long lasting battery
  • Auto-shut off if no operation in 10 minutes
  • These tablet-style DO meters have a wide range of applications, such as aquariums, medical research, agriculture and fish hatcheries, laboratories, water conditioning, mining industry, quality control and research institutes.
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