Electrode measures iodide concentrations in aqueous solutions, or in applications like milk analysis, pharmaceuticals, feeds and plant tissues. Range is from 1.0 to 5 x 10-8 M (127,000 to 5 x 10-3 ppm). Temperature range is 0 to 80°C. Rugged, solid state construction and epoxy body. Requires use of a double junction reference electrode 659-420-12. 1 m cable.