Besseling Industry-Technic B.V.
- Supplier of industrial atmosphere control equipment, with applications in inerting, blanketing, tire-filling, and food and metals processing. Products include nitrogen generators, gas control and removal systems, and compressors.
- http://www.besseling-group.com/

Premier o2 Solutions
- Provider of refurbished industrial oxygen concentrators and equipment. Located in California.
- http://www.premiero2solutions.com

Ozmotics
- Manufactures commercial and industrial ozone generators for applications including aquaculture, water treatment, food processing, and soil remediation.
- http://www.ozmotics.com/

EnviroRental Products Ltd
- Manufacturer of portable ozone generators and monitors in the UK. Overview of products, and an ozone FAQ.
- http://www.ozonedirect.co.uk/

In House Gas
- Designs and manufactures nitrogen and hydrogen generators and compressed-air purifiers for laboratory and industrial applications. Offices in UK, Netherlands, and USA. ptl manufacture and supply nitrogen, hydrogen and zeroair generators as well as a ra
- http://www.inhousegas.com/

Oxymat A/S
- Danish manufacturer of PSA oxygen and nitrogen generators and cylinder filling stations. Also offers control systems, accessories, and liquid separators.
- http://www.oxymat.dk

Onsite Gas Systems, Inc.
- Manufacturer of nitrogen and oxygen generation systems, using membrane, adsorption, and combustion technology. Also offers cylinder filling stations. Located in Connecticut.
- http://www.onsitegas.com

Cosmodyne
- Designs and manufactures cryogenic air separation plants, natural gas liquifiers, and accessories for the industrial gas, aerospace and military industries. Located in California.
- http://www.cosmodyne.com

MVS Engineering Limited
- Supplier in India of a variety of gas production equipment, including oxygen and nitrogen PSA's, membranes, hydrogen generators via electrolysis and ammonia cracking, and endo- and exo-gas generators, as well as compressed air drying systems.
- http://www.mvsengg.com/

Treadwell Corporation
- Producer of medium- to large-scale water electrolysis units for producing oxygen or hydrogen.
- http://www.treadwellcorp.com/

Aqua SO2 Inc.
- Manufactures and distributes sulfur dioxide generators that produce sulfurous acid for treating water quality and soil management problems. Applications include turf irrigation, wastewater treatment, and algae control.
- http://www.aquaso2.com/

Oxair Ltd.
- Manufacturer of on-site PSA oxygen generators for commercial and medical applications. Niagara Falls, New York.
- http://www.oxair.com/

Peak Scientific
- Manufacturer of laboratory gas generators.
- http://www.peakscientific.com

Ozontechnik
- Manufacturer of industrial Ozone generators for disinfection purposes. Sao Paulo, Brazil.
- http://www.ozonio.com.br/

N2 Generation Ltd.
- Supplier of Nitrogen generators to the United Kingdom and International markets.
- http://www.n2gen.com/

Parker Balston Gas Generators
- Manufactures high purity gas generators. Includes description of products, services, markets, and literature. Haverhill, Massachusetts.
- http://www.parker.com/ead/cm1.asp?cmid=348

Elettronica Todescato
- Manufactures hydrogen and oxygen gas generators which use electric energy and water. Features technical specifications and applications. Italy.
- http://www.elettronicatodescato.com/

Cv International, Inc. and CvB
- Manufacturer of both mobile and stationary generators that produce nitrogen from the surrounding air for use in military and commercial aerospace applications. Torrance, California.
- http://www.cvintl.com/

Craft Engineering
- Specializing in the development and the construction of autonomous and mobile oxygen generators for medical, industrial and military usage. Belgium.
- http://www.craft-engineering.com/

Trio3 Industries
- Manufactures industrial sized ozone generators, swing absorption compressed air dryers, and oxygen generators. Find description of products, applications, and testimonials. Fort Pierce, Florida.
- http://www.trio3.com/

AirSep Corporation
- Manufacturer of commercial and medical PSA oxygen generators and concentrators for industrial and human respiratory applications. Based in Buffalo, New York.
- http://www.airsep.com/

Oxygen Generating Systems, Inc.
- Oxygen generators designed specifically for industrial applications. Provides descriptions of products and applications, design services, and technical support information. Amherst, New York.
- http://www.ogsi.com/

OxLife
- Manufactures small, lightweight, and portable oxygen concentrators for medical and industrial use. Includes product specifications, prices, online ordering, and parts. Hendersonville, North Carolina.
- http://www.oxlifeinc.com/

SeQual Technologies
- Manufactures industrial and medical oxygen and nitrogen delivery systems. Offers a description of the separation process and comparison between conventional oxygen concentrators and advanced technology fractionators. San Diego, California.
- http://www.sequal.com/

Orion Group International
- Supplies fully integrated on-site, on-demand Oxygen, Nitrogen, Nitrox, Ozone and other gas generating systems to the world market. Features product photos and specifications. Miami, Florida.
- http://www.oriongroupintl.com/