RE: Ozone testing
Many years ago there were ozone requirements in the U.S. product safety standard for Office Appliances Business Equipment, UL114 = this standard is long outdated but I do still have a copy. I believe these requirements were aimed at copy machines. I will e-mail you the text offline. I would guess that there may also be limits identified in U.S. OSHA laws. Regards, Bill Bisenius E.D. D. www.productsafeT.com -Original Message- From: jules [mailto:ju...@hursley-emc.co.uk] Sent: Thursday, January 29, 2004 12:21 PM To: 'emc-p...@ieee.org' Subject:Ozone testing 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 ?? Thanks, Julian Jones, Hursley EMC Services, 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 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
Re: Ozone testing
Ozone is nasty, corrosive stuff. I've seen what it does after only 30 days in a home water purification system. You could try one of the suppliers Scott Batiste, Pres Ionics Ultrapure Water Corp 5900 Silver Creek Valley Rd San Jose, CA 408 360 5900 formerly Ionics Fidelity Purewater They probably know the standard. Sorry, don't know their website or email address. - Robert - On Thu, 29 Jan 2004 19:18:45 + John Woodgate j...@jmwa.demon.co.uk wrote: 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 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
Re: Ozone testing
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
RE: Ozone...
Can somebody confirm information I picked on the radio that each Shuttle launch causes a major damage in the Ozone layer? Mirko Matejic - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Ozone...
All I found was the following from 1996 ... http://www.ssnewslink.com/html/governme.html At 09:44 AM 10/9/98 -0400, Matejic, Mirko wrote: Can somebody confirm information I picked on the radio that each Shuttle launch causes a major damage in the Ozone layer? Mirko Matejic - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: Ozone...
Date sent: Wed, 7 Oct 1998 18:07:40 -0400 From: Chris Dupres chris_dup...@compuserve.com Subject:Ozone... To: emc-pstc emc-p...@ieee.org Send reply to: Chris Dupres chris_dup...@compuserve.com Chris - I do not claim to be an expert in this, so please take the following with a big grain of doubt. Good PSTC People. Is Ozone a toxin? I don't know about the classifications of toxins per se; however, in high concentrations, ozone (O3, while oxygen is 02) is not at all heathy. It is a very strong oxidant (stronger than oxygen), and can damage tissues. It is one of the components of smog. Having said that, ozone in the upper atmosphere is what acts as a protective layer around the Earth, in part because of its instability. Many years ago I had a factory inspector threaten to close down some High Voltage test equipment because there was too much Ozone being produced. Lately we have had bad vibes about a Xerox copier making too much Ozone and threats of ill health etc. to operators. So my questions are: Are there any legal limits on the production of Ozone? Is it dangerous/what are the physiological effects? See above - oxidant. Where can I find out about it? Why do they sell Ozone generators for use in kitchens and bathrooms, does it get rid of smells etc.? Why do I get a headache and a tight chest when I'm around this stuff? Too much ozone == less oxygen in the lungs, as I understand it. Ozone can trigger asthma attack in some people. Exposure to oxidants is thought to cause the development of free radicals in the tissues and these, over the lond term, are said to cause cancer and tissue degeneration. So, take your beta carotene... Funny stuff, Ozone. Sure makes screws go rusty very quickly! Any information anybody wants to share? Chris Dupres Surrey, UK. My $.02 worth Kate Kathy MacLean President APREL Laboratories -Research-Consulting-Training-Certification Testing- -Specialists in Electromagnetics, Acoustics, Wireless Telecommunications, and SAR- 51 Spectrum Way, Nepean, Ontario, Canada K2R 1E6 (613) 820-2730 (613) 820-4161(fax) http://www.aprel.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Ozone...
The American Congress of Governmental Hygienists (ACGIH), a private organization, has the following 1998 recommendations for the time weighted average: Heavy work: 0.05 ppm Moderate work: 0.08 ppm Light work 0.10 ppm ACGIH recommedations are based upon legal limits set in the US and international recommendations. You should check with your national authorities to see if there are legally required limits in your country. Richard Woods Sensormatic Electronics wo...@sensormatic.com Views expressed by the author do not necessarily represent those of Sensormatic. -- From: Chris Dupres[SMTP:chris_dup...@compuserve.com] Reply To: Chris Dupres Sent: Wednesday, October 07, 1998 6:07 PM To: emc-pstc Subject: Ozone... Good PSTC People. Is Ozone a toxin? Many years ago I had a factory inspector threaten to close down some High Voltage test equipment because there was too much Ozone being produced. Lately we have had bad vibes about a Xerox copier making too much Ozone and threats of ill health etc. to operators. So my questions are: Are there any legal limits on the production of Ozone? Is it dangerous/what are the physiological effects? Where can I find out about it? Why do they sell Ozone generators for use in kitchens and bathrooms, does it get rid of smells etc.? Why do I get a headache and a tight chest when I'm around this stuff? Funny stuff, Ozone. Sure makes screws go rusty very quickly! Any information anybody wants to share? Chris Dupres Surrey, UK. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: Ozone...
Hi Chris: Here's a better URL: http://scifun.chem.wisc.edu/CHEMWEEK/Ozone/ozone.html This one answers almost all of your questions! Best regards, Rich - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: Ozone...
Hello Chris, I assume your xerox copier is used in an office or business environment. Such copiers are covered under the European Standard for Information Technology Equipment, Including Electrical Business Equipment EN60950. This standard has limits for ozone concentrations. I do not have a copy with me at this time but if you wish, I can send you the limits when I get back to work on Tuesday. Alternatively one of our fellow PSTC members may volunteer to specify the limits before Tuesday. Anyone out there with a copy of your EN60950 or UL1950 standards? Look for any signs of third party cerification marks on the copier. If you see one, most likely it was investigated to the ITE requirements for ozone; unless of course there were major changes in the unit such as replacement of the high voltage power supplies with ones other than what was originally tested. Best Regards, Date sent: Wed, 7 Oct 1998 18:07:40 -0400 From: Chris Dupres chris_dup...@compuserve.com Subject:Ozone... To: emc-pstc emc-p...@ieee.org Send reply to: Chris Dupres chris_dup...@compuserve.com Good PSTC People. Is Ozone a toxin? Many years ago I had a factory inspector threaten to close down some High Voltage test equipment because there was too much Ozone being produced. Lately we have had bad vibes about a Xerox copier making too much Ozone and threats of ill health etc. to operators. So my questions are: Are there any legal limits on the production of Ozone? Is it dangerous/what are the physiological effects? Where can I find out about it? Why do they sell Ozone generators for use in kitchens and bathrooms, does it get rid of smells etc.? Why do I get a headache and a tight chest when I'm around this stuff? Funny stuff, Ozone. Sure makes screws go rusty very quickly! Any information anybody wants to share? Chris Dupres Surrey, UK. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
