Abstract

This white paper explores how unique design features and iodide/triiodide ion pair reference chemistry help Thermo ScientificTM OrionTM ROSSTM pH electrodes deliver fast, stable, and accurate measurements.

When pH measurement performance counts

A pH measurement, along with temperature and weight, is one of the most common measurements performed in laboratories. Reliable and accurate pH measurement is critical for ensuring the quality and safety of drinking water, as well as most pharmaceutical, personal care, and food products. Many industrial processes, such as chemical production, petrochemical production, and wastewater treatment, require constant pH monitoring to help control the process and ensure a quality product.

What is covered in this whitepaper

• The distinctive orange coil is highly visible in the glass body version of ROSS electrodes. It not only gives ROSS electrodes their distinctive look, but is also a feature designed to increase electrode lifetime
• The triodide/iodide system inside the coil provides a chemically stable house for the redox system and protects the electrode from contamination. The first ROSS electrodes were housed in a straight stem, but the product creators were not satisfied with the limitations of this design.