Picked this unit up for a filter that was attached to it - perhaps some of
you folks need super clean ionized air?
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item00394900716
Hi, Bill.
I have one at the plant that is used to blow wash water off printed
circuit boards. We are VERY careful about ESD. Moving air creates
static electricity. This gun creates both positive and negative
charged ions that neutralize the charge created by the compressed air.
The gun on the end of the tube has a trigger switch that controls the
air and the electric charges. The air supply to the unit is dried and
also goes through a large paper filter unit. There is also a little
glass filter on the unit itself.
Paul
Hi, Bill.
I have one at the plant that is used to blow wash water off printed
circuit boards. We are VERY careful about ESD. Moving air creates
static electricity. This gun creates both positive and negative
charged ions that neutralize the charge created by the compressed air.
The gun on the end of the tube has a trigger switch that controls the
air and the electric charges. The air supply to the unit is dried and
also goes through a large paper filter unit. There is also a little
glass filter on the unit itself.
Paul
Also useful in packaging plants that "cellophane" packets. The film is cut
to length, then the carton is forced through the film sheet and folded
around it before being heat welded. If the humidity is low the film sheet
can develop a life of its own and jump damned near anywhere. A stream of
ionised air conducts the charge away and solves a lot of problems.
Ozone is known to be toxic. And I gather that birds do have more
sensitive lungs. Some info here: http://www.birdsnways.com/wisdom/ww23ev.htm
You can dig around for more.
I use this style of air purifier to get rid of foul :-) smells
mainly.
Does a great job. Just wouldn't want to have any living critters
in the room when the machine is pumping ozone.
DOC
Something about robots...
http://www.robot-one.com
I did find info about ozone and birds, after it was too late. The paper
included with the poison gas emitter only briefly mentioned ozone (about
one sentence) as causing the clean fresh smell after a thunderstorm.
Same room, only about 10 feet between their cage and the death machine.
Thanks so much, Sharper Image.
Whoever buys Bill's unit, DON'T breathe the output.
since this unit is intended for blowing off stuff in a clean room, I suppose
one might assume that the end user will use it for it's intended purpose
rather than as a component in a breathing apparatus.
Tue, 9 Feb 2010 05:52:10 -0800 (PST), doc, snipped-for-privacy@sympatico.ca wrote:
Everything is known to be toxic. It's all in the
concentration and/or dose.
The auction says this produces 1 part ozone per
BILLION parts of air 18" from the gun @ 15 psi... a
meaningless spec as far as actual O₃ production is
concerned unless you want to do a bunch of math, but
somewhat relevant as far as the units for OSHA limits.
OSHA says you can work for 8 hours in an environment
with 100 times that concentration.
Ozone generators I've owned generally spec O₃
production in grams (or hundreds of milligrams) per
hour. Concentration depends on volume of air in the
room and how fast the ozone breaks down into O₂ again.
I once tried using it to kill off mildew in a travel
trailer. Ran a 400mg/hr unit for several days. It
wasn't enough. The trailer smelled nice immediately
following treatment, but a few days later, the mildew
smell returned.
Doesn't harm living critters of variety dog, cat, or
human.
The EPA says you're wrong.
http://epa.gov/iaq/pubs/ozonegen.html
"Relatively low amounts can cause chest pain, coughing, shortness of
breath, and throat irritation. Ozone may also worsen chronic respiratory
diseases such as asthma and compromise the ability of the body to fight
respiratory infections."
Thanks. The EPA is in complete agreement with what
I've written, and thanks to your link, I now know that
the FDA and NIOSH are as well, in addition to my earlier
reference to OSHA.
"Relatively low amounts" is completely meaningless.
Look at the numbers at the above link. Now look at the
numbers in my post you replied to. 1 part per BILLION
doesn't come anywhere close to any of the numbers you
implicitly cite.
Again, "Everything is known to be toxic. It's all
in the concentration and/or dose."
"The concentrations reported above were adjusted to exclude that portion
of the ozone concentration brought in from the outdoors. Indoor
concentrations of ozone brought in from outside are typically 0.01- 0.02
ppm, but could be as high as 0.03 - 0.05 ppm (Hayes, 1991; U.S. EPA,
1996b; Weschler et al., 1989, 1996; Zhang and Lioy; 1994). If the
outdoor portion of ozone were included in the indoor concentrations
reported above, the concentrations inside would have been
correspondingly higher, increasing the risk of excessive ozone exposure."
"Many factors affect ozone concentrations including the amount of ozone
produced by the machine(s), the size of the indoor space, the amount of
material in the room with which ozone reacts, the outdoor ozone
concentration, and the amount of ventilation. These factors make it
difficult to control the ozone concentration in all circumstances."
Steve Ackman:
"Doesn't harm living critters of variety dog, cat, or
human."
EPA:
"When inhaled, ozone can damage the lungs"
"Decreases in lung function"
"Aggravation of asthma"
"Throat irritation and cough"
"Chest pain and shortness of breath"
"Inflammation of lung tissue"
"Higher susceptibility to respiratory infection"
"While high concentrations of ozone in air may sometimes be appropriate
in these circumstances,
*conditions should be sufficiently controlled to**insure that no person or pet becomes exposed* "
I found a deal for you. Go ahead.
Ionic Breeze Quadra Silent Air Purifier - $75 (West LA)
http://losangeles.craigslist.org/wst/for/1594156234.html
"Quiet and you can smell the fresh air"
Thanks, but I've read nothing good about that
particular brand. The ozone generators I already have
work fine (except for killing deeply embedded mold &
mildew, as upthread), and I didn't pay that for brand
new units. Matter of fact, two of the units I have
together didn't run me as much as your "deal."
But do they match the Ionic Breeze from Sharper Image?
The ozone issue is just the start. Grimy walls, drapes, furniture is
icing on the cake!
http://epa.gov/iaq/pubs/ozonegen.html
"However, some ozone generators are manufactured with an "ion generator"
or "ionizer" in the same unit. An ionizer is a device that disperses
negatively (and/or positively) charged ions into the air. These ions
attach to particles in the air giving them a negative (or positive)
charge so that the particles may attach to nearby surfaces such as walls
or furniture"
http://www.birdsnways.com/wisdom/ww23ev.htm
"Ozone air cleaners remove nothing from the environment. Bacteria are
neutralized and all airborne pollutants are electrically charged so that
they are attracted to the floors and walls of the room. The pollutants
will continue to build up on the floors and walls till they are removed
by some other means."
Exactly. BUT. Neither do they ADD anything to the
environment as would, say, sodium hypochlorite or
a Lysol type spray, or any other common "disinfectant"
or "deodorizer" would. You take the oxygen that's
already in the air, convert it to ozone, which reacts
with certain particulates. At the end of the day, you
have no more and no less in the room than when you
started. Same exact mass, just in an altered state.
Yes, and you think that's a "bad" thing?
The point is to get odors, smoke, bacteria, whatever
out of the air. Thank you for pointing that out.
Breathe crap now, or wipe/vacuum it up later or clean
it off collection plates, or throw it out with HEPA
filters. I've never seen it "attracted" to floors
and walls; more like the oxidized particulates are
now heavier than they were, and tend to drift to the
floor.
I can't really tell what your argument is here. I
guess you prefer crap IN your lungs, as opposed to on
a dust cloth? Or is it your position that the benefits
of ozone you mention aren't worth any potential risk of
creating "too much" ozone? Or that any amount of ozone
is "too much"; even one part per BILLION? Or is it your
position that ozone is fine for people and pets in
OSHA/EPA concentrations as long as "pets" doesn't
include birds?
You keep disagreeing (I think), but you have yet to
state your position.
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