| AccuAire Air Treatment Systems: Air treatment system available with an air quality sensor to control units operation. No filters to replace or plates to clean. |
| Advanced Air Solutions: Advanced Air Solutions provides home and office air purification systems |
| Air and Water Technology, Inc.: Information on indoor air and water contaminants and removal strategies using "natural" technologies. |
| Aquaphor: Russian manufacturer of water filter devices with global distribution. |
| Atlantic Ultraviolet Corporation: Manufactures water purifiers, air and surface sanitisers and germicidal lamps. |
| Crystal Air: Provides commercial and domestic ozone generators and purifiers for air and water purification. |
| Cuno Inc.: Standard and custom design and manufacture of filtration systems for water purification, healthcare and industrial applications. |
| DP Filters: Providing commercial and industrial accounts in Northern and Central Illinois with air filtration products and services. |
| Ecologix Environmental Systems: Offering air and water purification as well as wastewater treatment and recycling systems. |
| Electrodepot indoor air quality: Air purifiers and air filters, allergy relief and negative ion generators. Products for indoor air quality improvement Hepa filters and odor elimination systems |
| Enprotec Corporation: Provider of products and services for the removing toxic chemicals and pollutants from the air and water. |
| FCI Watermakers - Reverse Osmosis Systems: FCI markets reverse osmosis systems for fresh, brackish and sea water. |
| Fuller Ultraviolet Corporation: Ultraviolet germicidal technology for use in liquid sweetener storage applications, HVAC commercial and residential systems, and liquid sterilization. |
| Genqao Technology Corporation: China based manufacturer of air and water ozone filters. Site in Chinese and English, and includes product photos, overview of ozone technology, and sales network. |
| Group AT Export, SA: Disinfection and deodorization of water and air and ozonization systems of reduced coefficient. |
| IQAir: Air cleaning solutions and product information. |
| Mobile Hospital Air Purification Systems: Air purification systems with a FDA 510K certification, mandatory for hospitals and health care facilities. |
| Natralite Filters, Inc: Light filters put melanin back into artificial light. |
| Ozone Industries-UK: A UK designer and manufacturer of ozone generators for commercial and domestic air and water purification. |
| Ozonox: Manufactures and distributes commercial, industrial, and medical ozone generators for air and water purification systems. |
| Ultraviolet Devices, Inc.: UVDI is a manufacturer and distributor of UV lamps used in air and water disinfection products. |
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