The Advantec NO2 Badge is a passive air sampler for monitoring ambient levels of nitrogen dioxide. The small plastic badge can be pinned to a subject or mounted on a stationary object. The badge houses a dual layer filter system consisting of both an absorbent filter and a fibrous PTFE filter to control wind effects. After exposure the badge should be transported to the lab in the foil pouch or other hermetic container.
Levels of NO2 are determined spectrophotometrically.