Extech DO700 Dissolved Oxygen Meter with pH, Conductivity, TDS, Salinity, Resistivity

Extech DO700 Multiparameter Water Quality Meter

The Extech DO700 is a comprehensive dissolved oxygen meter that also measures pH, mV, conductivity, TDS, salinity, resistivity, and temperature. Designed for environmental testing and industrial water quality monitoring, this portable instrument combines multiple measurement functions in one rugged, waterproof housing.

Key Features & Highlights

• Measures dissolved oxygen concentration and saturation, pH, mV, conductivity, TDS, salinity, resistivity, and temperature
• Automatic salinity compensation and manual barometric pressure compensation for accurate DO readings
• One-button pH calibration at 4, 7, and 10 pH, with optional 3-point calibration for higher accuracy
• One-point conductivity calibration with automatic recognition of 8 calibration solutions (USA, Europe, China series)
• Automatic temperature compensation, including non-linear compensation for purified water (<10 µS/cm) to improve accuracy
• Memory stores up to 400 readings with series number, measured value, and temperature
• Large blue backlit dual LCD display for easy reading in low-light conditions
• Auto power off with disable function to conserve battery life
• Waterproof housing (IP67) for reliable use in field and industrial environments

Applications

The Extech DO700 is ideal for environmental monitoring, aquaculture, wastewater treatment, laboratory testing, and educational use. Its multiparameter capability makes it a versatile tool for professionals who need to assess water quality in various settings.