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Scott Laughlin, UL Environment and Sustainability

W. Elliott Horner, UL Environment and Sustainability

As the market for low cost sensors to monitor indoor air quality has grown significantly in the last 5 years, the accuracy and reliability of such sensors has become a topic of discussion. Using reference grade instruments and calibrated source concentrations of analytes under laboratory conditions, we evaluated 3 types of low cost IAQ sensors for their ability to reproducibly measure VOCs and PM 2.5 within their claimed sensitivity range.