A-L Compressed Gases - Distributes calibration gases, regulators, and accessories for portable and fixed systems. Includes products, pricing and online ordering. Portland, Oregon. Alternative Refrigerant Distributors - Buys, brokers and sells hard commodity items and specializes in industrial and commercial gases and products. Company information and services. Aurum Research Limited - Distributor of stand-alone oxygen and nitrogen cryogenic coolers and generators. Includes equipment specifications and engineering services. Toronto, Canada. 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. Clinical Air Systems Inc. - Distributes medical gas and equipment. Phoenix, Arizona. Cylinder Central - Distributes helium, carbon dioxide, nitrogen, beer mix, propane and other compressed gases for general business use across the United States. Prest-O-Sales & Service, Inc. - A full service distributor of compressed gases and metalworking supplies. Includes directory of manufacturers and products. New York. R.V.Distributors - Distributor for liquid medical oxygen and nitrous oxide, oxygen therapy and anesthetic equipments, and accessories. 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 WESCO Laboratory Gases - Distributes industrial, specialty, laboratory and cryogenic gases and equipment in the San Francisco Bay Area.