Replacement Electrode Module Testing Parameter Conductivity pH Measurement Range 0 to 19.99mS Conductance pH Range 0 to 14 Tip Shape Flat Operating Temp Range 32 Degrees to 122 Degrees F Body Material Polycarbonate Diameter 16mm Length 38 mm Temp Sensor -5 Degrees to 90 Degrees C For Use With Extech EC500 Electric Conductivity Meter Shelf Life 1 yr Electrolyte KCL Recommended Use Liquids Includes Cap Manufacturers Warranty Length 6 mo