This company has developed a new total residual oxidant (TRO) analyzer to address the needs of the wastewater industry, which calls for a robust, dependable instrument capable of reliably measuring low parts per billion (ppb) chlorine concentrations in effluent and treated wastewater in line with stringent regulatory requirements. Operating on the U.S. Environmental Protection Agency (EPA)-approved iodometric electrode technology, the Orion 7070iX TRO Analyzer (photo) has a high sensitivity for low-level chlorine measurements down to 1 ppb, with 1 ppb resolution. For optimal application flexibility, the new analyzer also enables full range measurements up to 15 ppm. — Thermo Fisher Scientific Inc., Waltham, Mass.