Each electrode is carefully checked before packing and is delivered with an individual control report including information such as the response curve,checkpoint value and slope. Ion Species NO3- Temperature range 0 à 50°C Concentration range (M) 3 x 10-6 to 100 Concentration range (ppm) 0.2 to 60000 Sensor type PVC Length 103 mm Diameter 12 mm pH range 3 to 10 Interfering ions Cl-, Br-, NO2- Recommended reference electrodes REF201/REF251/REF451