Description
Description
The Ozone Colorimetric ChromAir Badge is a patented direct-read autogenic exposimeter. The device is constructed from six cells attached on one side to a flat indicator layer and on the other side to a series of different diffusive resistances. Ozone gas diffuses to the cells through the different diffusive resistances and reacts with the indicator layer, producing color change from blue to light blue and finally to white upon high exposure. The color produced on the indicator layer is a direct measure of the exposure dose. Visual color comparison is achieved by observing the formation of the light blue threshold color on the cell and reading the corresponding exposure dose. P
Ozone is a bluish gas with a pleasant, characteristic odor in concentrations of less than 2 ppm. In higher concentrations, the odor is pungent and irritating. Ozone is a severe irritant to the eyes and the mucous membranes. Long-term exposures will cause pulmonary edema (abnormal fluid buildup in the lungs) and chronic respiratory disease. OSHA and NIOSH exposure limit for ozone is 0.1 ppm (TWA). Ozone is used as a disinfectant for air and water. It is also used to bleach waxes, textiles and oils.
