EC500 - Waterproof ExStik^® II pH/Conductivity Meter
Combination rugged flat surface pH electrode with autoranging high accuracy Conductivity cell

EC510 - Waterproof ExStik^® II pH/Conductivity Meter Kit
Combination rugged flat surface pH electrode with autoranging high accuracy Conductivity cell

DO610 - ExStik^® II DO/pH Conductivity Kit
User friendly kit economically measures 6 parameters supporting water, wastewater, groundwater, aquaculture and fisheries professionals

EC400 - Waterproof ExStik^® Conductivity/TDS/Salinity Meter
One high accuracy multi-range sensor measures four parameters (Conductivity, TDS, Salinity, and Temperature)