How can you tell the level of Ozone? - Hydromall - Your source for all things hydroponic

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Ozone

How can you tell the level of Ozone?

There are a number of mechanical methods available, the most common and effective being the Draeger tube, but the simplest, least expensive and very reliable method is to use your nose. Residual ozone becomes apparent to sensitive humans in the range of .01 - .03 ppm, or well below the permissible levels for continuous exposure. As noted previously, this residual ozone is extra ozone that is not required to kill bacteria etc. Adjustment of the rheostat is all that is required.

Newsflash

Published: Thursday, March 22, 2007 | 2:22 PM ET

Canadian Press: JUDY CREIGHTON

(CP) - Sometime in the future, food shoppers may be able to buy green beans, broccoli and other vegetables in the winter months that have been grown in Canadian greenhouses rather than relying on produce imported from the southern U.S.