A-L Compressed Gases  
   Distributes calibration gases, regulators, and accessories for portable and fixed systems. Includes products, pricing and online ordering. Portland, Oregon.
   http://www.alcompressedgases.com/

Aurum Research Limited  
   Distributor of stand-alone oxygen and nitrogen cryogenic coolers and generators. Includes equipment specifications and engineering services. Toronto, Canada.
   http://www.aurumresearch.com/

Carbonic Systems  
   An authorized distributor of the Tomco Equipment Company offering CO2 and related equipment throughout the North Eastern United States. Covers applications and uses. Elmira, New York.
   http://www.carbonic.com/

Clinical Air Systems Inc.  
   Distributes medical gas and equipment. Phoenix, Arizona.
   http://www.clinicalairsystems.com/

Cylinder Central  
   Distributes helium, carbon dioxide, nitrogen, beer mix, propane and other compressed gases for general business use across the United States.
   http://www.cylindercentral.com/

Prest-O-Sales & Service, Inc.  
   A full service distributor of compressed gases and metalworking supplies. Includes directory of manufacturers and products. New York.
   http://www.prest-o-sales.com/

WESCO Laboratory Gases  
   Distributes industrial, specialty, laboratory and cryogenic gases and equipment in the San Francisco Bay Area.
   http://www.wesco-gas.com/

R.V.Distributors  
   Distributor for liquid medical oxygen and nitrous oxide, oxygen therapy and anesthetic equipments, and accessories.
   http://www.rvdgases.com/

Scott-Gross Company, Inc.  
   Regional supplier of bulk cryogenic, industrial, medical and specialty gases, propane and dry ice as well as welding equipment and supplies. USA
   http://www.scottgross.com

Alternative Refrigerant Distributors  
   Buys, brokers and sells hard commodity items and specializes in industrial and commercial gases and products. Company information and services.
   http://www.ardtrading.com/