EziLab Compact Dissolved Oxygen Meter EZL-CDO121 provides fast-response dissolved oxygen measurement for aquaculture management, sewage treatment monitoring, environmental water surveys, laboratory analysis, and educational research applications. Automatic temperature and salinity compensation maintains consistent dissolved oxygen meter readings across changing water conditions, while lightweight handheld format supports easy portability during field sampling. Battery-powered operation enables extended monitoring without external power sources, and stable sensor performance delivers repeatable readings across confined and open sampling points. Compact body fits restricted access locations for practical DO analyzer use throughout routine and research workflows. EziLab's Lab Equipment and water quality analyzers compile the full dissolved oxygen meter and portable DO analyzer range for aquatic and wastewater professionals.



Dissolved Oxygen {
Working Conditions {
Power 2 AA batteries (1.5 V)
Dimensions (W×D×H) 160×90×30 mm (Instrument), 480×300×60 mm (With Packing)
Weight 360 g (Instrument), 1 kg (With Packing)
  • Large LCD screen with adjustable white backlight

  • Rack and skid proof shell

  • DO mode have functions of ATC, auto salinity compensation and auto pressure compensation

  • Polarographic DO electrode can measure temp., salinity and DO

  • Equipped with DO electrode calibration sleeve, only need 3-5 minutes for polarization

  • Built in microprocessor chip with auto-calibration, auto- temperature compensation, data storage, self-diagnosis, auto-power off and low voltage display

  • Combined diaphragm cap, replace sensitive membrane just by screwing new cap

  • IP57 waterproof housing

  • Data storage of 200 sets

  • These compact DO meters are suitable for many applications like: aquaculture, water source monitoring, sewage treatment, environmental protection monitoring.

  • Compact DO Meter LO-CDOM400 Series 1 unit

  • Dissolved Oxygen Electrode 1 pc

  • Temperature Electrode 1 pc

  • Membrane Cap 3 pcs

  • Electrode Electrolyte (30 ml) 1 bottle

  • Back up AA battery 2 pcs

  • Operation Manual 1 copy