Replacement Electrode Module Testing Parameter Total Chlorine Measurement Range 0.01 to 10.00ppm Total Chlorine 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 Cl200 Meters PH100 Meters PH110 Meters Standards EPA approved Shelf Life 1 yr Recommended Use Liquids Semi-Solids Solids Includes Cap Manufacturers Warranty Length 6 mo