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UV Solutions For Schools And Hospitals |
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Case Study #2 - Large City Hospital A large city hospital tested UV units to determine if ultraviolet lamps would effectively control microbial growth inside a large second floor air circulating system. The test locations were both the down and upstream sides of the A/C cooling coil system. Testing was performed using SAB DEX Contact Plates. They first tested for unexposed surface fungi concentrations in the coil region. At each location the fungi (mold) were identified before UV exposure resumed. One location on each side of the A/C coil was cleaned before tests started. Other parts on both sides were left uncleaned. It was determined that the locations had between 30 to 50 Culture Forming Units (CFU) of fungi (mold). The short-wave ultraviolet lamps were then installed and tested for results. Both clean and uncleaned surfaces were tested for fungi to determine if the ultraviolet light would effectively eliminate surface contamination.
The next two tables show not only the CFU count before and after the UV installation, but identifies the type of fungi at each location.
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