See also:

• Business: Industrial Goods and Services: Industrial Supply: Filters  (153)
• Science: Environment: Air Quality: Indoor Air Quality: Products and Services  (117)
• Science: Environment: Water Resources: Drinking Water  (113)

This category in other languages:
	German  (10)   Turkish  (17)

• Air and Water Technology, Inc. - Information on indoor air and water contaminants and removal strategies using "natural" technologies.
• AllerAir Industries - Manufacturer of air purifiers and cleaners with activated carbon, HEPA, UV and photocatalytic technology. Includes dealer information.
• 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
• 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.
• 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.