Ozone measurement of Airofresh 1000 and BCU
A single unit each of Airofresh 1000 and Airofresh BCU were used. Ozone measurements were taken using a calibrated Aeroqual Series 500 ozone meter with an accuracy of +/- 0.01 ppm.
Ozone readings were taken in and around the Airofresh office building on Glen Osmond Rd, a highly-trafficked arterial route in Adelaide.
Ozone readings were measured as follows:
- Airofresh 1000: the meter was held in the exhaust flow.
- Building interior: an Airofresh 1000 unit was placed in a room of approximately 48 m3 and all doors and window closed. The unit was operated for a period of two hours before readings were taken.
- Airofresh BCU: a large clear plastic bag was placed over the carbon filter on the BCU and taped to the body to create a chamber. A 5 cm hole was cut into the top of the bag to allow airflow. The meter was placed inside the bag on top of the BCU and left for 5 minutes for the atmosphere to equilibrate.
- Building exterior: four readings were taken outside the building in different positions at an approximately similar distance from Glen Osmond Rd.
Results & Discussion
Table 1. Ozone measurement
|Building interior (ambient)||0.03||0.04||0.03||0.03||0.03|
|Building interior (ambient)||0.03||0.04||0.04||0.03||0.04|