Ozone found in ambient air can have a direct affect on human health and also has the potential to create photochemical smog. It is for this reason that the U.S. EPA has set a one hour limit of 120 ppb and an 8 hour limit of 80 ppb. Ozone has been found to affect human health by harming the respiratory and immune system. People with pre-existing respiratory damage or diseases are more likely to suffer from the affects of ozone.

Ozone in the atmosphere is created due to photolysis of NO₂ in the presence of sunlight. The NO₂ is created either directly from combustion processes that include motor vehicles, power stations and other combustion sources or due to a reaction between NO and VOCs which also come from combustion sources.

Due to the low hourly average of 80 ppb, high performance analyzers with excellent detection limits are required.

Ecotech provide the following equipment for ozone analysis and calibration:

• Serinus 10 ozone analyzer
• EC9810 ozone analyzer
• Ozone photometer