307-75 Lead Mono ION Selective ElectrodeLead mono ION selective electrode for applications such as plating baths, organic compounds. About Lead Mono ION Selective Electrode. This electrode requires a separate reference electrode. Suitable for when greater accuracy is required (especially when ION levels are low). Applications Plating baths Organic compounds Specifications Dimensions: 120 x 12mm Concentration: 10 1 5 x 10 8M Lower Limits (ppm): 1. 0 Ref. Electrode: R2 Temp Range : 0 80 Main