Multi-Parameter Sonde that measures optical Dissolved Oxygen, pH/ORP,  turbidity, conductivity, temperature, and pressure, Salinity, resistivity, Total Dissolved Solids (TDS) and Density.

The Aqua TROLL 500 is a fully customizable multiparameter sonde with interchangeable sensors and a smartphone interface that delivers accurate data and enables simplified calibration, panoramic data view and report creation. Ideal for spot-checking and profiling applications when used with a Wireless TROLL Com or long-term monitoring with VuLink.