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HealthWay DFS vs UVGI comparison (2)

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I. Introduction and Background of HealthWay DFS Technology The HealthWay DFS Air Purification System technology was originally developed through a government grant focused on germ warfare. The professional line of air cleaning by HealthWay is the only hybrid system to effectively address all three pollutant categories. It has been proven to capture 99.99% of all particles as small as .007 micron in size which is over 40 times smaller than the HEPA filtration standard. Our units are equipped with a gas and odor filter, which eliminate most gases. The patented DFS technology removes 99.99% of harmful viruses, mold, and bacteria passing through our system leaving nothing but fresh, pure, healthy air. This technology is currently used in hospitals, medical clean rooms, government buildings, and military applications. This document compiles industry established performance criteria, comparison between conventional UVGI and the advanced Disinfection Filtration System DFS by HealthWay. The below referenced scientific evidence and results of field studies also highlights the side by side comparison between UVGI system and the advanced DFS in field applications such as in HealthCare, biotech cleanrooms and a pharmaceutical cleanroom equipped with a Disinfecting Filtration System (DFS) that significantly reduces airborne bioburden in cleanrooms. The DFS High Efficiency Particulate Air hybrid system traps and kills bacteria and also improves the filtration performance of a filter media by two to three orders of magnitude. In laboratory tests the DFS technology has been shown to kill Staphylococcus epidermidis and Escherichia coli. These field test results support laboratory testing and show that basically there is no airborne bioburden in both a Class 10 room, with terminal HEPA in addition to the DFS, and in a Class 1000 room that utilizes only the DFS without any terminal HEPA filters. When compared to DFS UVGI is not considered a stand-alone solution to air contamination problems but is an adjunct. II. Laboratory Evaluation of the DFS The DFS technology went through multiple third-party testings' of its efficiency, filter classification and effectiveness on a number of criteria pollutants. The tests were conducted by independent research institutes including Syracuse University BEES Lab and University of Buffalo IUCB. Additional filed studies in the area of clean room applications were conducted by Jaisinghani et al.8 have demonstrated the bactericidal properties of the DFS AKA "Electrically Enhanced Filtration EEF" under laboratory conditions. This study, conducted at Virginia Polytechnic Institute, is summarized in this section. III. Results and Discussion The results are summarized in the Virginia Polytechnic Institute study. In the absence of any voltage applied to the DFS unit (i.e., control tests), viable bacteria were recovered from one square inch of filter in the range of 1 x 105 CFU to 2 x 106 CFU. Counts greater than about 3 x 106 CFU were too crowded to be accurately counted and were considered to be too numerous to count. When high voltage was applied for four hours, the majority of the HealthWay DFS Technology VS UVGI

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