The HORIBA U-52 multiparameter water quality meter is a field-ready, portable monitoring system that delivers accurate, real-time measurements across multiple critical water quality parameters from a single integrated probe. Built for environmental professionals, remediation teams, groundwater consultants and water treatment operators, the U-52 monitors and logs water quality simultaneously in rivers, groundwater wells, lakes, wastewater systems and industrial discharge environments.

The U-50 Series platform integrates multiple sensors into one probe, letting you measure and display up to 11 parameters at once — which cuts setup time and simplifies field workflows considerably. The rugged construction, automatic calibration and live on-screen display of every channel make it well suited to demanding field sampling and long-term monitoring programs.

With EPA-compliant turbidity measurement, field-replaceable sensors and high-capacity onboard data storage, the U-52 helps you maintain data quality while maximizing time on site.

Measured parameters

• pH
• ORP (redox potential)
• Dissolved oxygen (DO)
• Electrical conductivity
• Salinity
• Total dissolved solids (TDS)
• Seawater specific gravity
• Temperature
• Turbidity
• Water depth

Applications

• Groundwater monitoring well sampling and low-flow purge stabilization
• Surface water surveys of rivers, lakes, streams and reservoirs
• Remediation site performance monitoring and site characterization
• Municipal and industrial wastewater and effluent discharge compliance
• Stormwater and turbidity monitoring at construction and discharge sites
• Coastal, estuarine and brackish water monitoring
• Drinking water source and raw intake monitoring

Note: the configuration options below include probe, cable, handheld control unit and backpack.

Choosing a cable length

Match the cable to your deepest measuring point. Short cables suit surface water, flow cells and beaker readings; 10 m covers typical shallow monitoring wells; 30 m is for deep wells, reservoirs and full water-column profiling.

Sensors, parts & accessories

Visit the Horiba U-52 Sensors page for replacement pH, ORP, DO and turbidity elements, reference electrode tips and liquid junction caps.

DO membrane caps, probe guards, rubber caps, O-ring sets, wiper rubbers, flow cells, calibration beakers, carrying cases, external power supplies and standard solutions are all stocked in the Horiba Parts & Accessories collection. Complete replacement sensor probes and spare control units are listed separately.

Browse all HORIBA instruments.