Double Charged Ionizers-Where are they at....

I read "That Air Guy's" post explaining about the different types of air ionizers and I personally felt that the "Double charged ionizers may be the best for me, but Googling double charge or + and - air ionizers have gotten me no where. I even went to air ionizers sites but it appears that no manufacture depicts whether their ionizers expell both negative and positive ions; they talk about negative ions but not about positive ones.

There must be some way to separate double charge ionizers from single charge ionizers on the market in a much easier manner; maybe I need to word my search differently.

Since "That Air Guy" discussed the double charge ionizers maybe he can share his experience or knowledge of this type of air purifiers and make recommendations on companies and vendors offering these devices.

I would appreciate any info from all members of this site on "double charged ionizers". Tweet