products 
High Performance pH Sensors 
PERpH-X™ sensors feature an enhanced double junction reference electrode that excels in harsh applications. The specially designed porous Teflon® liquid junction has a large surface area that provides a stable contact to the solution and helps resist coating in dirty applications.
Model 3300HT and 3300HTVP PERpH-X™ High Performance pH and ORP Sensors
The ultimate in high temperature performance, these sensors incorporate several design innovations that prolong the life of the sensor in difficult hot processes.
Model 3400HT and 3400HTVP PERpH-X™ pH and ORP Retractable Sensors
The retractable version of the Model 3300, this sensor includes a gel based reference that retains viscosity to resist the pumping actions of temperature and pressure.
Model 3500P and 3500VP PERpH-X™ Insertion and Submersion pH and ORP Sensors
The 3500P and 3500VP are the foundation of the Rosemount Analytical PERpH-X™ high performance pH / ORP sensor offering. The 3500P sensors incorporate several design innovations that prolong the life of the sensor in difficult applications.
Model 372 HF Resistant pH Sensor
Model 372 is an easy to install combination sensor that enables pH measurement of solutions containing HF. It will last much longer than conventional glass electrodes.
Model RB Threaded In-Line, Submerged or Ball-valve Insertion pH Sensor
The Model RB pH Sensor is designed for extended sensor life when used in applications with sulfides which are typically found in scrubbers.
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