Defense Industry

New England has long been a center of defense industry. Our customers provide expertise in aerospace, night vision, sensors, transports, and many other components of our national defense. These customers come to Middlesex Gases for expertise in gas applications. We also have a proud history of directly supplying to the agencies with the Department of Defense.

For testing satellite applications, we provide liquid helium, the coldest substance on Earth, and liquid nitrogen. Deuterium and other isotopes are available.

Middlesex Gases provides high quality pure gases and mixes, including Homeland Security gas mixes containing Toxic Industrial Chemicals (TICs). DARPA funded agencies can come to Middlesex Gases for their solutions.

  • Acrolein
  • Acrylonitrile
  • Ammonia
  • Arsine
  • Benzene
  • Boron Trichloride
  • Boron Trifluoride
  • Carbon Disulfide
  • Carbonyl Sulfide
  • Chlorine
  • Cyanogen Chloride
  • Diborane
  • Ethylene Oxide
  • Fluorine
  • Formaldehyde
  • Hydrogen Bromide
  • Hydrogen Chloride
  • Hydrogen Cyanide
  • Hydrogen Fluoride
  • Hydrogen Selenide
  • Hydrogen Sulfide
  • Methyl Bromide
  • Methyl Chloride
  • Methyl Mercaptan
  • Nitrogen Dioxide
  • Phosgene
  • Phosphine
  • Sulfur Dioxide
  • Sulfuryl Fluoride
  • Toluene
  • Tungsten Hexafluoride
  • Vinyl Chloride

Deuterium and other isotopes (such as 18O and 13C) are available.

Middlesex Gases and Technologies provides Liquid Helium, Isotopes, Surrogate Mixes, Homeland Security Blends and meets the Small Business Requirements (CAGE #OHDF8).


Middlesex Gases is pleased to announce the launch of the new web site dedicated to welding products and services. Please visit today: MGTWeldingSupplies.com

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ISO/IEC 17025:2005:

Middlesex Gases & Technologies Inc., the premier supplier of Specialty Gases, Cryogenics, MicroBulk and Bulk gases in New England, has been accredited with ISO/IEC 17025:2005.

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Clients Served:

Schering Plough Research Institute