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How far negative ions travel
Home > Theory > How to choose the right negative ion generator (aka. ionizer) > How far negative ions travel
How far negative ions travel
Cool wind does not reach you!
You want to enjoy cool air as it is extremely hot, but the cool air created by your air conditioner does not reach you. It is just wasting electricity.
The same goes with negative ion generators. If negative ions do not reach you, the generator is wasting electricity. Some negative ion generators generate negative ions but only very few reach you.
Pay attention to the distance from the negative ion generator!
Negative ion counts are generally measured in (pcs/cc). You cannot evaluate performance of negative ion generators with this value only.
For example, a negative ion generator which generates 1,000,000 (pcs/cc) can be good or not so good. This is because the distance from the generator where this amount of negative ions can be detected is not shown. Negative ion counts dramatically decrease as you go further away from the generator. There are products which emphasize the ion count detected at the blow off point while very few can be detected at 50cm away. This is why you need to pay attention to the distance.
The ion count at a distance away from the generator determines the performance of the generator.
Ion count in the blow off direction
The ion count detected at a certain distance away from the ion generator shows you how far negative ions travel.
You need to pay attention to the ion count at least in the blow off direction because most manufacturers do not provide ion count information in angled directions. It would be ideal if negative ion counts in the both directions were always available.
If the ion count at 1m away from the ion generator is below 10,000 (pcs/cc), the performance is not so good.
Ion count: Performance (for your reference)
300 (pcs/cc) at 50cm: Poor
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