Argonide Corporation’s P231-certified CoolBlue™ Water Purifier System offers true microbiological purifier performance. The company’s first under-counter system, which is simple to install and operate, incorporates three distinct, advanced technologies. Stage 1 utilizes original NanoCeram® technology with the latest in activated carbon for improved taste and reduction of soluble contaminants. Stage 2 utilizes Pentair® Filtration’s highly advanced Fiberdyne® technology. Stage 3 relies on Argonide’s patent-pending DEAL® filtration media, a final polishing filter that has been optimized to attract, capture and retain submicron particles, including bacteria and viruses. CoolBlue meets US EPA’s Guide Standard for Microbiological Purifiers as tested/certified by WQA.