Color change for Ozone is from blue to white.

The ChromAir ozone badge may be used for personnel or area monitoring for exposure times ranging from 5 minute to 10 hours.

Introduction

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 build up 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

Principle of Operation

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.

Operating Instructions

1. Remove the pouch from refrigerator and allow it to warm to room temperature.

2. Remove the badge from its protective pouch.

3. Enter all pertinent information on the I.D. label before monitoring is started (i.e. name, location, date and start time).

4. For personnel monitoring, attach the badge near the user's breathing zone (i.e. collar) with the front side exposed to the surrounding atmosphere.

5. For area monitoring, attach the badge to a stand and mount in a centralized area with the front side exposed to the surrounding atmosphere and the back side protected from exposure to direct sunlight.

6. Check the back side of the badge periodically to determine the exposure dose (ppm•hr).

7. To read the badge, locate the highest level cell with light blue threshold color.

8. To obtain the average concentration (ppm) in the surrounding atmosphere, divide the exposure dose (ppm•hr) by the exposure time in hours. EXAMPLE: If the sampling time is 2 hours and the badge reads 0.08 ppm•hr, the average concentration is determined by: 0.08 ppm•hr Therefore the average concentration is 0.04 ppm.

Storage

The ChromAir ozone monitor should be refrigerated in its sealed bag at all times.

Sampling Parameters

Downloads

380010 Manual

Ozone Information