Ideal for all ORP testing, including anti-oxidant measurement, water purification applications, ionizers, agriculture, aquariums & aquaculture, chlorine monitoring, cooling tower disinfection, environmental testing, fruit & vegetable washing, hydroponics, metal finishing, ozone system monitoring, pharmaceutical & medical applications, pools & spas, pulp bleaching, vineyards & wineries and water treatment. ORP Range: -999 to +1000 mV Temperature Range: 0-80¡ãC; 32-176¡ãF Resolution: 1 mV; Temperature resolution is 0.1¡ãC/F Accuracy: 0.5% (+/-2mV) Calibration: Digital calibration by push button. Electrode: Replaceable glass sensor and reference tube electrodes Housing: IP-67 Waterproof (submersible; floats) Power source: 3 x 1.5V button cell batteries (LR44 or equivalent; included) Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches)
