products 
TUpH™ Sensors 
These models are designed for improved life in harsh, dirty, and abrasive applications containing suspended solids, such as lime slurry, waste treatment, paper machine headbox, and pigment/dye applications.
Model 396/396VP Submersion/Insertion pH/ORP Sensor
The Model 396 Sensor is specifically designed for improved life in harsh, dirty, and abrasive applications such as lime slurry waste treatment, paper machine headbox and pigment/dye applications, where large quantities of suspended solids are present.
Model 396P/396PVP Submersion/Insertion pH/ORP Sensor
The TUpH™ reference junction and helical pathway combined with the AccuGlass™ pH glass perform exceptionally well in dirty, high solid applications and require only minimum maintenance.
Model 396R/396RVP Retractable pH/ORP Sensor
Model 396R Sensor is specifically designed for improved life in harsh, dirty applications where a separate sample stream is difficult to provide and greater insertion depths are required.
Model 397 TUpH™ Sensor & the Quick-Loc Kit
The low maintenance Model 397 pH sensor offers long life and high performance in the measurement of pH in aqueous solutions with high suspended solids.
Model 398 and 398VP TUpH™ pH and ORP Sensor
The chemical-resistant construction of Tefzel®, titanium, and the patented TUpH™ reference junction makes Models 398 and 398R the ideal sensors for measuring pH in harsh process liquids.
Model 398R and 398RVP TUpH™ Retractable pH and ORP Sensors
Model 398R/RVP sensors now incorporate the new SILCORE™ technology contaminant barrier. This triple-seal barrier prevents moisture and material impurities from migrating to the pH sensor’s reference electrode’s metal lead wire.
Model TF396 TUpHFET™ Non-glass Submersion/Insertion pH Sensor
The ion-selective field effect transistor (ISFET) pH electrode provides a stable pH measurement. Its rate of response can be ten times faster than glass electrodes, enabling better process control.
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