Dissolved Oxygen Meter Accurate and stable measurement of dissolved oxygen and temperature with automatic temperature compensation from 0 to 40°C, ensuring reliable readings in realworld conditions. Temperature compensation for key factors affecting oxygen solubility, including temperature, atmospheric pressure, and salinity, to support normal use across environments. precision and fast response: quickly delivers results for liquids in the range of 0.0 to 40.0 mg/L. Includes 6 protective covers for the probe. Detachable probe for easy replacement. If readings drift over time, calibration may be affected and the membrane sleeve may need replacement. Easy to use and portable: compact penshaped design is light and easy to carry, enabling water testing anywhere. Digital backlit display provides clear, convenient data reading. Use scenarios Aquarium and aquaculture: monitor dissolved oxygen and water temperature to support healthy fish and plant environments. Outdoor water quality checks: test ponds, streams, or irrigation water in the field to assess suitability and safety. Laboratory or industrial testing: perform precise, onsite DO and temperature measurements during water quality assessments and experiments.