• SEMCO True 3Å Wheels are preferred in laboratory environments because of their industry-leading capability to effectively limit contaminant transfer. True 3Å has been proven repeatedly though independent research conducted in the laboratory and in occupied buildings. Independent testing has documented the limitation of contaminant carry-over to less than .045%

    Johns Hopkins University School of Medicine
    Baltimore, Maryland

    Project: After careful evaluation by their Health & Safety department, Johns Hopkins chose SEMCO True 3Å wheels for their ability to provide superior indoor air quality, low (.045%) contaminant carry-over, and energy efficiency. 100% outdoor air ventilation with ten air changes per hour, per lab, was the expected minimum.

    Product: SEMCO True 3Å Wheel

    Payoff: With a $1.1 million savings in first cost compared to a conventional system and an annual energy savings of $700,000, 

    Our relationship with Johns Hopkins University has been ongoing since 1990. Read this Letter of Reference from 2006 with some project highlights.