360-75 Nitrate ION Selective Electrode (BNC)Ion Selective Electrode for testing applications such as soil, drinking water etc. About Nitrate Combination ION Selective Electrode This electrode can be used with any convenctional hand held or laboratory meter with a millivolt mode. The sensor is fitted with a 1 metre cable, terminated with a BNC connector. No reference electrode filling solution needed. Solid state sensors. Suitable for novices (no knowledge specialist skills required). Very