On the front edge of a table, nightstand, etc. about 2 - 3 feet from
other objects. In a bedroom, about 3 feet from your head is the best
Don't place it in a bookshelf, etc. The negative ions (and some dust)
will be attracted to the inside of the shelves, rather than going out into
the room, where you want them.
There's several ways to generate negative ions. However, the way we do
it is apply a safe, extremely low-current, high voltage to microscopically
small sharp points on the advanced ion emitter. This is known as corona
discharge, and we think we've perfected that method. (It's the only
way to generate a sufficient level of negative air ions to a point where
they can affect our mood). Without getting into a detailed explanation and
delving into electron physics, the electrons build up on the sharp points
and are ejected into the air, where they attach themselves to oxygen
atoms. Since the electrons have a "negative" charge, the molecules of
oxygen with extra electrons become negative ions.
The voltage level and carefully engineered negative ion emitter design
in our ionizers optimizes the level of negative ions in the room while
eliminating unwanted ozone production.
We recommend trimming the eight fine wires on the
standard SSE ion emitters every month or two to maintain optimum negative
ion output. Since the wires are about 2.5" long as shipped, and you can
trim them shorter than 1" and still have the ion output, how long they
will last depends on how much you trim off. You don't need to trim off
much at all; about 1/16" is what we recommend. Doing that, the SSE ion
emitters should last two or three years or so. Replacement SSE emitters
The idea behind trimming is to keep the ends of the wires sharp (as
viewed under magnification). The ends of all ion emitters wear, and as
that happens, the ion output decreases.
The optional CFE emitter ($29.95) requires no trimming,
and has a projected lifespan of 5 years or more.
All ion emitters simply plug in to the top of the
None. A negative ion generator is an ionizer. An ionizer is a negative
However, all ionizers are certainly not equal. Our negative ionizers
are long-life, high-ion-density units which put out the optimum level of
negative ions, for one thing.
A lot! Negative ions are molecules of oxygen (O2)
in the air with an extra electron. Ozone is O3, a molecule of
oxygen consisting of three oxygen atoms instead of the normal two.
Negative ions primarily reduce particulates (such as
dust, pollen, mold spores, bacteria, etc.) in the air; but they usually
aren't quite as effective as ozone for eliminating odors.
Ozone does not reduce the particulates in the
air, but it is effective at eliminating odors, even very strong odors.
Too much ozone is bad for you. Having said that, there
are machines available that intentionally generate ozone (we can supply
them if you need one), but if the level of ozone is properly adjusted,
the ozone and the odors in the air cancel each other out and little if any
Note that there are some machines sold as "negative ion
generators", that are actually ozone generators. We do NOT do that: all
of our ionizers are genuine negative ion generators.
Our customers tell us they do indeed get rid of odors, yes. See the
While ozone is more effective for odors (ions are most effective for
particulates such as dust, pollen, cat and animal dander, and other
allergens), a number of people who have purchased our ionizers use them to
get rid of cigar smoke, cat litter box smell, musty smells, and other
If the odors come from particulates (microscopic particles) in the air,
negative ions can indeed eliminate the odorous particles, and so eliminate
We used an Alpha Labs ion counter with a digital readout. The reading
at approx. one meter (39") from the emitter is 1,000,000 negative ions per
cubic centimeter. These measurements are done in rooms with no fans and
roughly 45% humidity. Multiple readings were done at each location and for
every model to ensure accuracy.
We test the total negative ion output out of the ion emitter per second
(approximately 90 to 100 trillion) using more than one method. However,
these tests of the ion output is a proprietary method that we do not share
with the world. Worst case, though, the ion output figures on our site are
only 5% off.
We used to not publish these ions per cubic centimeter figures, because
that varies greatly with the distance from the emitter, humidity, and air
movement within the room. However, our ionizers do indeed emit a
high and optimum level of negative ions into a room. The coverage
is approximately 400 square feet (e.g. a 20' by 20' room). That's
4000 cubic feet, if you have 10' high ceilings.
Yes, we can supply two types of ion detectors if you are interested;
however, both are relative output units and while useful, do not have a
1. One is a simple unit (model IDN-1); when it is held close to a
high-density ionizer, the gas lamp flashes. The closer you hold it to
the ion emitter, or the stronger the ion source, the faster it flashes.
Normally, it is only $12.95 but it is FREE
when purchased with any ionizer (see our
2. The other (model IDS-2) is much more sensitive. This very
sensitive air ion detector simultaneously indicates the presence of both
negative and positive air ions. It can measure the relative ion
intensity of negative ion generators indoors, or even detect
naturally-occurring negative ions outdoors.
- Two separate air ion detectors in
one: a negative ion detector and a positive ion detector in the same
- Will detect naturally-occurring
levels of negative ions outdoors, such as enhanced levels due to
thunderstorms (even in the distance), or other natural sources.
- Uses special LEDs (high-brightness
light-emitting diodes) and reliable solid-state circuits for a visual
indication of the presence of air ions.
- See if your computer monitor, air
purifier, etc. is generating harmful levels of positive ions.
- See if your air purifier or
"negative ion generator" really generates meaningful levels of
negative ions. Most do not.
- The relative intensity of the ion
field is indicated by the brightness of the LEDs and how far away from
the ionizer (or other ion source) the LED's glow.
- This compact, hand-held ion detector
is attractive, durable, very sensitive, and operates for a long time
on one 9 volt battery (included).
- Costs much less than any air ion
detector or ion counter of similar sensitivity.
Although we provide a simple ion detector with every ionizer order, you
really don't need an ion detector; you already possess two "detectors"
that will show you that the unit is working: your eyes and ears! In the
"If you almost touch the ion emitter with your ear, you may
hear a very quiet hiss (if you have good hearing and there is no other
sounds in the room). You might also feel a very light breeze or movement
of air while you are near the tips of the ion emitter. When it is dark,
turn out the lights, and after a few minutes (when your eyes become
accustomed to the dark) you may be able to see a small pinpoint blue
glow on the tips of the wires. The glow will intensify as you move your
hand close, and disappear for a few seconds if you touch it." The glow
and sound indicate that the unit is working and putting out high levels
of negative ions.
A detector that measures actual ion levels in the air costs $600 or
more. You can easily pay several thousand dollars for a lab-grade ion
No, our ionizers certainly do not generate any positive ions.
Some other brands of ionizers generate the negative ions by removing
electrons from nearby oxygen atoms (thereby creating positive ions) and
transferring the electrons to nearby neutral atoms to generate negative
ions. However, our ionizers emit all the electrons directly from the ion
emitter (instead of robbing them from other atoms). These electrons
transfer to oxygen atoms in the air, creating negative ions in large
quantities without also creating positive ions.
Some ionizers --even using the corona discharge method of generating
ions-- that we've tested actually and intentionally produce positive
ions, without telling the end user. We do not agree with that way of
Other info is on other pages of this site. Please check the links to
our other pages below.
We occasionally receive e-mails asking "how do your products compare
to..." other ionizers made by other manufacturers. We do not consider it
ethical (nor would anybody believe us!) to immediately say that, yes, ours
are better than a certain brand. But the
comments from people
who've bought them speak for themselves. And there's already enough
info on this web site that says why we believe ours are superior and
We think ours will outlast any other ionizer available.
That's a bold statement, but we believe it is the truth for four reasons:
1. All ionizers have an ion emitter, and all emitters wear out. But our
emitters are either user-renewable (details on our site) or, for $29.95
extra, extremely long life. In any case, they are replaceable; they just
2. We've seen many ionizers that build up a coating of dirt inside that
makes them stop working after a relatively short period of time. But ours
are designed to have the dirt build up on the outside so it can be cleaned
3. The electronics inside the ionizer is not only a reliable design,
but quality built.
4. We still have, and use, the first ionizers we've ever made. And they
still work like the day we built them, even though they have been in
almost continuous operation for years.
We have a 60-day trial period and five-year
warranty on all our IG-133 series tabletop room ionizers (and most other
products we offer).
Have you seen the false advertising
yet? There are several misleading product ads or product names
that imply that their 'ionizer' actually puts out a breeze consisting of a
useful level of negative air ions, when that is not the case.
Before you buy, read their manual, catalog, package, etc. Do they say that
their product actually emits large numbers of ions externally?
Our products do.
Several other 'purifier' products claim to be ionizers, but are in fact
really ozone generators. Yet others do generate negative ions, but do so
internally; few ions ever leave their unit and go out into
People see other ionizer brands advertised, and naturally assume that
the higher-priced ionizers must be better than ours. So how can our
negative ion generators be really good at these low prices? Because we are
the manufacturer of these ionizers, we sell them on this web site direct
to the customer, and that means there's no middleman to mark up the
We could mark up our ionizer prices so that people would stop asking us
that, but you really wouldn't want that, would you? ;-)
Yes. We run our negative ion generators near computers and other
sensitive equipment. We have never had a problem, and are not aware of
anyone who has.
We have IG-133A ionizers each with a DC-2 DustGrabber™ next to them
right on top of our large monitors, neutralizing the positive ions from
the monitors very effectively!
If you place your ionizer at least a foot or so away from a computer,
you should be safe. However, if you touch any ion emitter to certain
portions of sensitive electronic equipment, (such as the connectors on the
back of your PC or cables, etc. which you would never do, right?), the
potential for damage would be significant.
It is possible that if you place a negative ionizer too close to your
monitor, it might get dustier than normal, because the monitor's positive
charge can attract negatively charged dust.
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