Ionizer Products

Negative ions for air purification and more - by Comtech Research.

Feel good again...
Try one for only $144.95

These reliable high-density negative ion generators are compact, quiet, and highly efficient. Our negative ionizers generate far more usable negative ions than some negative ionizers costing several hundred dollars, yet sell for a fraction of the cost. And we have developed superior, longer- lasting negative ion emitters in our labs that emit far more negative ions than brushes, needles, or other methods commonly used.


We have actually measured over 93 trillion negative ions per second output. And this goes up when something or someone gets close to the ion emitters. The actual ion output depends on the humidity* in the room and the condition** of the ion emitters.

We do not publish ions/cm3 (ions per cubic centimeter) figures, because the actual negative ion density varies with the distance from the ion emitter, humidity, and air movement within the room. However, these ionizers do indeed emit a high and optimum level of negative ions into the room. The coverage is approximately 400 ft2 (400 square feet, a 20' by 20' area). That's 4000 cubic feet, if you have 10' high ceilings.

These compact units plug into any standard 120 volt AC outlet (other voltages available). Draws very little power (less than 1 watt!), so is exceptionally economical to operate.

The IG-133, IG-133A, and IG-133DG negative ionizers measure only 5 by 5.25 inches by 1.5 inches tall (up to 7 inches tall, including the ion emitter).

* The ion output decreases somewhat at very low humidity. This effect is minimized in the IG-133A or IG-133DG.

Click here to read the difference between the models

** All ion emitters on negative ion generators deteriorate. However, Comtech Research has developed ion emitters on their negative ion generators which are user- renewable! Simply trim the ends of the fine wires on the ion emitter (on top of the unit) occasionally with a pair of wire cutters, according to the instructions, to keep the ion output at its peak.

The ion emitter is replaceable. It plugs in to the top of the box. Replacement SSE ion emitters only $9.95.

CFE-2 long-life, maintenance-free negative ion emitter (optional)Long-life, maintenance- free CFE ion emitters are also available in our online store for only $29.95.



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International models available for export:

The models shown are for North America or Japan, standard 100 to 120 volts 60 Hz. However, we also have IG-133A ionizers available for export to Europe, the United Kingdom, Australia, and other countries. 220-240 volt 50/60 Hz units with a special plug for those countries are now available for $25.00 (US) extra upon request. 



Uses no chemicals, perfumes, filters, fans, agents, or ozone.

Negative Ion Generators

negative ion generator (ionizer) model IG-133

Model IG-133

negative ion generator (ionizer) model IG-133A

Model IG-133A


Model IG-133DG


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room ionizers


Safe to use near computers


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Five-year Warranty


Improved ionizers now available! The older IG-033 series has been replaced by the IG-133 series negative ion generators. Same appearance, higher negative ion output, same high quality.

We also have other products, including the DustGrabber™ ionizer accessory for enhanced dust, pollen, and mold spore control on our newer web site; and the Ozone Cannon™ commercial ozone generator

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Less than .01 parts per million ozone close to the emitter; MUCH less than that a short distance away from the ionizer.




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