Science Inventory



Williams, R., A. Kaufman, AND S. Garvey. CAIRPOL CAIRCLIP O3-NO2. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/117 (NTIS PB2015-105134), 2015.


The National Exposure Research Laboratory’s (NERL’s) Human Exposure and Atmospheric Sciences Division (HEASD) conducts research in support of EPA’s mission to protect human health and the environment. HEASD’s research program supports Goal 1 (Clean Air) and Goal 4 (Healthy People) of EPA’s strategic plan. More specifically, our division conducts research to characterize the movement of pollutants from the source to contact with humans. Our multidisciplinary research program produces Methods, Measurements, and Models to identify relationships between and characterize processes that link source emissions, environmental concentrations, human exposures, and target-tissue dose. The impact of these tools is improved regulatory programs and policies for EPA.


The CairPol CairClip O3-NO2 is a lightweight, portable sensor for measuring ozone (O3) and nitrogen dioxide (NO2) in parts per billion (ppb) or micrograms per cubic meter (µg/m3) in applications such as personal exposure and indoor and outdoor air quality monitoring. It uses a micro fan to actively sample air. The CairClip can run on battery power for approximately 24 hours, but it can also operate continuously for much longer periods when plugged into a power source. This operating procedure explains what you need to do to collect quality O3 and NO2 data using the CairClip sensor for your monitoring project

Record Details:

Product Published Date:06/25/2015
Record Last Revised:06/29/2015
OMB Category:Other
Record ID: 308111