Nitrogen

Nitrogen is a colorless, odorless, nonflammable, inert gas.

Looking for a local nitrogen gas and liquid nitrogen supplier? General Air provides a reliable nitrogen supply for businesses across Colorado. delivering nitrogen for industrial, medical, food and beverage, and lab applications.

Download SDS: P-4631

Call (303) 892-7003

NITROGEN SIZES & GRADES

Nitrogen is available in gas form in high-pressure steel or aluminum gas cylinders, allowing you to choose the nitrogen tank size that fits your application. You can also purchase liquid nitrogen dewars in low-pressure units or bulk. Our most popular sizes and grades are below. Don’t see what you need? Send us a message, and we’ll get back to you in 1 day.

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AVAILABILITY

Nitrogen gas and liquid nitrogen are available for purchase with a new gas cylinder or for exchange in Colorado at any of our Front Range locations. Business customers can purchase nitrogen tanks in-store, request delivery, and receive bulk quantities.

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Ultra High Purity, 5.0

Zero, 4.8

High Purity, 4.8

Extra Dry, 2.6

Industrial

NF

Five nitrogen cylinders from General Air shown on a height scale.

Ultra high Purity Nitrogen Cylinder Sizes

Size	Volume	CGA	Full Pressure
#1 Steel	310CF	580	2400
#2 Steel	234CF		2216
#4 Aluminum	125CF		2015
#5 Steel	80CF		2216
#6 Steel	60CF		2216

Trace Impurities

Nitrogen	O₂	H₂O	THC
99.999%	<1 ppm	<1 ppm	<1 ppm

Nitrogen cylinder from General Air shown on a height scale.

Zero Nitrogen Cylinder Sizes

Size	Volume	CGA	Full Pressure
#1 Steel	304CF	580	2400

Trace Impurities

Nitrogen	O₂	H₂O	THC
99.998%	<4 ppm	<3 ppm	<1 ppm

Two nitrogen cylinders from General Air shown on a height scale.

High Purity Nitrogen Cylinder Sizes

Size	Volume	CGA	Full Pressure
#1 Ultra High Pressure Steel	505CF	677	6000
#1 Steel	304CF	580	2400
#2 Steel	263CF	580	2216

Trace Impurities

Nitrogen	O₂	H₂O
99.998%	<5 ppm	<3 ppm

Extra Dry Nitrogen Cylinder Sizes

Size	Volume	CGA	Full Pressure
#1 Steel	304CF	580	2400
#2 Steel	263CF	580	2216

Trace Impurities

Nitrogen	O₂	H₂O
99.90%	<6 ppm	<3 ppm

Seven industrial nitrogen cylinders from General Air shown on a height scale.

Industrial Nitrogen Cylinder Sizes

Size	Volume	CGA	Full Pressure
Liquid Portable Unit	196L	580	350 MAX
#1 Ultra High Pressure Steel	505CF	677	6000
#1 Steel	304CF	580	2400
#2 Steel	230CF		2216
#4 Steel	115CF
#5 Steel	82CF
#6 Steel	65CF
#7 Steel	20CF

Trace Impurities

Nitrogen	O₂	H₂O
99.00%	<1%	<40 ppm

Five NF nitrogen cylinders safe for medical use from General Air shown on a height scale.

NF Nitrogen Cylinder Sizes

Size	Volume	CGA	Full Pressure
Liquid Portable Unit	196L	580	350 MAX
HH (#1)	304CF		2400
H (#2)	230CF		2212
M (#4)	115CF
Q (#5)	82CF

Trace Impurities

Nitrogen	O₂	CO	Identity Test	Odor Test
99.0%	<1%	<10 ppm	Pass	Pass

Common Applications for Nitrogen

Food packaging
Light bulb production
Electronics (soldering)
Pharmaceuticals
Lasers
Cryopreservation
Cryotherapy
Cooling applications
HVAC industry
Ice Cream (delicious)
Flash freezing
Purging, carrier, and blanket gas
Fire suppression,
Tire filling systems
Beverage dispensing
Calibrating instrumentation (e.g., air quality monitoring)
Cryogen to preserve blood, tissue, and other biologic specimens
Freeze and destroy diseased tissue.
Blanket gas for the production of medicine

Ice cream with liquid nitrogen supplied by General Air

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Frequently Asked Questions

How is Nitrogen used in food preservation?

Nitrogen prevents oxidative damage that leads to food spoiling.

What is the difference between NF and USP?

NF (National Formulary) and USP (United States Pharmacopeia) designations indicate that the product is safe for medical use. They were two separate regulatory bodies that merged in the 1970s. Some medical gases are designated NF, some are USP, and some are the merged USP-NF. NF, USP, and USP-NF gases are all regulated by the FDA (Food and Drug Administration).

Industries We Serve

Liquid nitrogen dewar next to a Bruker NMR spectrometer in a laboratory setting

Manufacturing: Nitrogen is widely used in laser cutting as an assist gas, blowing molten material from the cut zone and preventing oxidation.

Medical: Nitrogen is used in cryogenic storage and to preserve biological samples.

Food & Beverage: Liquid nitrogen is used for serving beer, food preservation, packaging, and extending shelf life.

Breweries: Nitrogen is used for beer carbonation, dispensing, and maintaining product quality during storage and transport.

Laboratory: Nitrogen gas supports laboratory research, controlled atmospheres, and to purge and backfill thermal vacuum (TVAC) chambers used in spacecraft and component testing.

Maintenance & Repair: HVAC technicians use nitrogen to pressurize refrigerant lines and piping systems for leak detection before charging.