- Air Liquide America Specialty Gases LLC
- Developing pure gases and mixed specialty gases for all types of process control and instrument calibration applications. Specialized in specialty gases for laboratory, environmental monitoring, medical, and semiconductor and electronic applications.
- Certified Specialty Gases, Inc.
- Packaging and distribution of specialty gases including pure gases, sulfur hexafluoride, halocarbons, toxic and corrosives gases, rare, and custom specialty gas mixtures.
- Chemgas
- Supplier of enriched noble gas isotopes, helium-3, neon isotopes, krypton isotopes, xenon isotopes and isotopic gas mixtures. Reliable source for metal stable isotopes used in science, medecine, research and industry.
- Conley Gas, Inc.
- Manufacturing, purification, repackaging and distribution suppliers of pure gases to the specialty gas industry.
- Gasco Affiliates, LLC
- Precision calibration gas mixtures for all gas detectors. NIST standards, flow regulators, gas generators.
- GHC Gerling, Holz & Co.
- Specialty gases for refrigerants and equipment available to the chemical, healthcare and refrigeration service industry.
- MESA Specialty Gas & Equipment
- Manufacturer of calibration gas standards used in a wide variety of instrument applications in the laboratory, energy, petrochemical and refinery industries.
- Nova Gas Technologies Inc.
- Supplier to the medical and semiconductor excimer laser markets.
- SAES Pure Gas, Inc.
- Develops ultra-high pure gas-handling equipment, supplying gas purifiers for a wide range of bulk and speciality gas applications.
- Spec Gas Inc.
- Supplier of specialty gases used in diverse applications in environmental, analytical and semiconductor markets.
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