ABB 100 GP 3/4" pH/ORP Electrode – Model APS121.P2.K2.A.05 This high-performance sensor is designed for reliable pH measurement in standard applications. It features a bullet glass electrode for durability, a 3/4" threaded insertion/immersion body style with a notched sensor guard for protection, and tagged lead connections for easy installation. The electrode comes with a 5 m (16.4 ft) integral cable, ensuring flexible and secure connectivity in industrial environments.