Chemtrol® pH Sensor NSF 50 designed for rugged pH/ORP service applications; the bodies of these electrodes are made from impact resistant epoxy tubing. The electrodes are designed with Ag/AgCl gel-filled/ sealed reference and dual ceramic pin wicks to offer excellent results with minimum maintenance. They also include low noise coaxial cable with dual shields.

The pH electrodes utilize a GP bulb glass, featuring fast response over the range of 0–12 pH. The ORP electrodes include a solid platinum band fused to its bulb glass for optimum reading.
The electrodes can be used continuously 0–60°C, and intermittently up to 100°C. Maximum pressure is 60 PSI.