Emerson Process Management introduces the Rosemount Analytical Model 398 TUpH® pH/ORP sensor, unmatched in the industry for chemical resistance and mechanical durability and ideal for harsh applications such as pulp and paper, chemical and plastics manufacturing. In pH measurement, the reference element must be protected from contamination by poisoning ions such as sulfides, cyanide, mercury and ammonia that would cause the pH signal to drift. The Model 398 TupH features technology that ensures long life in processes that typically coat, foul and poison most other electrodes.