The highly sensitive and selective sensor in the SafeAir badge is designed to show a homogeneous and stable color change, which appears as an exclamation point when a particular chemical is present. No calibration or laboratory analysis is needed, making the badges effective, easy-to-use and inexpensive.
For many SafeAir badges, a color comparator is available to pinpoint the exposure dose of a toxic chemical. These specially designed color charts feature a slot for the badges. Once the badge is inserted, the user can turn a wheel to match the colors. The exposure dose is indicated in the exposure dose window