Advanced Specialty Gases, Inc.  
   Offers high purity inert, fluorinated and hydrocarbon gases and gas mixtures. Site includes material safety data sheets for all products.
   http://www.advancedspecialtygases.com/

Conley Gas, Inc.  
   Supplier of pure gases to serve the specialty gas industry with multiple locations in the United States. Offers technical and shipping information on products.
   http://www.conleygas.com/

MESA Specialty Gas & Equipment  
   Global supplier of specialty gases, calibration gas, rare gases, hydrocarbon gas standards for instrument calibration. Additonal products include specialty gas regulators and specialty gas equipment. Santa Ana, California.
   http://www.mesagas.com/

Gasco Affiliates llc  
   Provides precision gas mixtures for gas detectors, to NIST standards, for flow regulators, gas generators. Enables accurate calibration of monitors.
   http://www.gascogas.com/

Matheson Tri-Gas  
   Supplier of gases and gas handling equipment to meet the needs of the semiconductor, analytical and industrial markets.
   http://www.matheson-trigas.com/

Scott Specialty Gases  
   International producer and supplier of all types of high-purity gases, gas mixtures, gas generators, and gas handling equipment for industrial, scientific, laboratory, electronics, medical, environmental, and petrochemical applications. Includes product s
   http://www.scottgas.com/

Specialty Gas Report  
   Serving the needs of specialty gas distributors and laboratory managers.
   http://www.specgasreport.com

Specialty Gases of America, Inc.  
   Importer, exporter and distributor of high purity specialty and rare gases.
   http://members.aol.com/thegasgods

Nova Gas Technologies, Inc.  
   Manufacturer of excimer laser gas mixtures for semiconductor manufacturing and vision correction systems. USA.
   http://www.lasergas.com

Spectra Gases  
   Manufacturer of rare, excimer laser, stable isotopic and environmental gases and gas mixtures.
   http://www.spectra-gases.com/

Chemgas  
   Provides isotopic noble gases and laser gas mixtures.
   http://www.helium-3.com