Air Purification Systems
   East Coast distributor of Pentex brand negative air ionizers.
   http://www.airionizer.biz

Comtech Research
   Ionizers for home and office use and information on negative ions.
   http://www.comtech-pcs.com/ions

The Watershed
   Water Ionizers, Spirulina, Chlorella at Wholesale prices.
   http://www.watershed.net