The Grainger Approved pH Electrode is a glass body combination electrode designed for general purpose pH measurement in the 0-14 pH range. It has a 12 mm diameter glass body, gel filled reference with Ag/AgCl reference wire, BNC connector, and epoxy body. The electrode provides accurate, stable pH measurements in aqueous solutions. It is compatible with meters that accept BNC connectors. The electrode requires storage solution and regular calibration for optimal performance.