Assertion: ozone's concentration | /r/HasProperty | exceeded
Facets:
Source sentences:
text: Unless otherwise noted, the test conditions were set and recorded: box size of 24 or 61 liters, lid latched tightly, ozone generator selected, ozone sensor ON and stabilized for 30 minutes as per manufacturer recommendations, room temperature stabilized to 70 ˚F. Data collection was started, and at approximately 40 seconds, the ozone generator was turned ON and ozone was introduced to the box as described in each experiment until a concentration of 22 ppm was exceeded, at which time the ozone generator was turned OFF and data was collected for the remainder of the 1000 second test period.