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Posted By David Lennon
I have had a few comments from colleagues concerned about the production and release of ozone from office printers & photocopiers.
Some even claim to be able to smell it!
I am aware of all the control measures that should be adopted and believe that this has probably cropped up due to everyone closing all their windows because of the inclement weather. I wondered if anyone out there has actually gone down the path of obtaining measurements? If so, how did you get on?
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Posted By Tyler
If measurements are taken they rarely get any where near the OELs especially in the newer equipment.
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Posted By Geoff Burt
The topic has been discussed several times before - try ozone on the search facility.
Ozone has a very pungent smell, a little like cat pee, and the saving grace of ozone is that the smell appears long before it exceeds the OEL.
Draeger do a tube for testing for ozone but, and purely personally speaking, I have never been able to get a reading from them as the concentration around any printers I've measured (with the ozone smell present) has been non-existent or too low to measure with a draeger.
Geoff
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Posted By John Donaldson
As Geoff says you can smell Ozone at about one tenth of the OEL. But if you have a VERY high concentration then it is possible that it may not be smelt.
I have once measured ozone from a printer but under very unusual circumstances.
The machine had developed a fault which caused the corona discharge wire to stay on. This was picked up and the service engineer called in. He corrected the fault but omitted to change the ozone filter which had become saturated.
With a few days the filter failed and when I was called to check the machine using drager tubes did find it was very close to the OEL.
So yes it can happen in certain circumstances.
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