This professional portable dissolved oxygen meter delivers reliable water oxygen detection with a wide measuring range of 0.0–20.0 mg/L and 0–40℃ temperature testing capacity. Boasting high accuracy up to ±0.3mg/L and 0.1mg/L resolution, it adopts stable electrode technology with built-in temperature compensation to eliminate reading deviations caused by water temperature changes, ensuring consistent, trustworthy data in all water environments.

Simple one-step calibration design lowers operation difficulty for beginners and professionals alike. Equipped with a clear LCD digital screen, it displays real-time DO and temperature values at a glance. Compact lightweight body supports handheld field testing, easy to carry to fish ponds, sewage plants, hydroponic farms and labs.Ideal for aquaculture oxygen balance control, industrial wastewater inspection, environmental water monitoring and laboratory water analysis. Durable construction with low maintenance cost makes it an essential water quality testing tool for commercial and household water management.