I read in !emc-pstc that jules <ju...@hursley-emc.co.uk> wrote (in <2B924D0A9291D511B59300D0B7208EA811E4F7@HEMC01>) about 'Ozone testing' on Thu, 29 Jan 2004: > We have a customer generating ozone via corona discharge, for water >purification. I am trying to find info on levels and limits, and test >standards. I admit this is a bit off the mark for the group, but hope >someone can advise. So far I have found the HSE doc EH38 & ISO 13964, >but I cannot find a lab in the UK able to test limits, lots of equipment >to perform the measurements. I'd appreciate anyone's advice on this, as >so far it appears below 0.1ppm is OK ! Perhaps it isn't necessary, >despite the health hazards of ozone ??
A Google search for 'ozone level' turned up far more hits that I can scan, but this is from the US EPA's 'Ozone page not found' page: EPA issued the 8-hour standard in 1997, based on information demonstrating that the 1-hour standard was inadequate for protecting public health. An area violates the standard if its fourth highest daily maximum 8-hour ozone average in a year, averaged over three consecutive years, is 0.085 parts per million or higher. The 1-hour standard also remains in effect at this time. I suspect that at 0.1 ppm, you can't smell it, and if you can't smell it, you probably won't complain about it. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. The good news is that nothing is compulsory. The bad news is that everything is prohibited. http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
