Objectives

students will use Ozone Detector Card® to measure the presence of ground level ozone

Materials

Ozone Detector Card®

Background

The Ozone Detector Card is designed for the measurement of ground level ozone.  Each of the five sensors can only be used once, even if no coloring has occurred (no ozone measured).  The influence of wind or not adhering to the specified measurement times can produce incorrect results.    The Ozone Detection Card consists of a cardboard card the size of a credit card.  On the card, there are five measuring points covered by aluminum coated plastic sealing strips.  To protect the card from water and humidity, the cards are coated with a UV varnish or are packed in thin plastic bags.

Procedure

1)  Place the Ozone Detector Card anywhere outside (protected from the wind) or inside near a laser printer or photocopier . 2)  Pull off the protective strip to start measuring ozone levels. 3)  Always evaluate the measurements immediately after the specified time: 10 minutes outdoors - 20 minutes indoors