The NO2 Badge is a passive air sampler designed for monitoring ambient levels of nitrogen dioxide in the air. The compact badge can be clipped to a subject or mounted on a stationary object. The plastic badge houses a dual layer filter system consisting of an absorbent filter and a 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.