BTU & Hydrocarbon Standards

Middlesex Gases offers a full range of BTU & hydrocarbon standards for our customers. We offer complex BTU mixtures for natural gas calibration. A wide variety of ASTM liquid standards are also available. Please contact us for more information.

Specialty Gas Equipment

  • Cylinder jackets
  • Regulators
  • Protocol Stations


Quick Reference Guide for Environmental Gases
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