HollyFrontier Cheyenne Refining LLC, a subsidiary of HollyFrontier Corp., Dallas, has purchased and installed the MetalGuard™ Selenium online analyzer to measure the wastewater selenium profile at the Cheyenne Refinery, Cheyenne, Wyoming.

SafeGuard™ is an automated trace metals analyzer for monitoring municipal and industrial water and wastewater. The system provides real-time, multi-stream analysis for a range of trace metal contaminants. SafeGuard delivers accurate and reliable results (up to 1 ppb or ± 15%, whichever is higher) with a typical measurement time of fewer than 30 minutes.

The MetalGuard™ Selenium analyzer provides real-time, reliable, and accurate data on selenium levels, including selenite and selenate. Results are available as quick as 30 minutes or in less than two hours, with sensitivity down to 1 ppb for certain selenium species. The fully automated online analyzer is offered with an annual service contract inclusive of a 10-year warranty.

The MetalGuard™ Arsenic analyzer provides real-time, reliable, and accurate data on arsenic levels in just 30 minutes with sensitivity down to 1 ppb. The fully automated online analyzer is offered with an annual service contract inclusive of a

Real-time data and analytical information from online instruments help utilities comply with water quality regulations. The complete article detailing how online water quality instruments are poised for growth was published in the March/April 2015 issue of World Water.