| EXTECH RE305 ORP Elctrd,Use W/PH100,PH110,RE300,CI200 Replacement Electrode Module, Testing Parameter ORP/Redox, Measurement Range -999 to 999mV ORP, Tip Shape Flat, Operating Temp. Range 32 Degrees to 122 Degrees F, Body Material Polycarbonate, Diameter 16mm, Length 38 mm, For Use With Cl200 Meters,... ... more EXTECH RE305 ORP Elctrd,Use W/PH100,PH110,RE300,CI200 Replacement Electrode Module, Testing Parameter ORP/Redox, Measurement Range -999 to 999mV ORP, Tip Shape Flat, Operating Temp. Range 32 Degrees to 122 Degrees F, Body Material Polycarbonate, Diameter 16mm, Length 38 mm, For Use With Cl200 Meters,... | | $59.99 go to store |