Air
Colorless, odorless, nonflammable gas.General Air is a compressed air supplier in Colorado, serving manufacturing, medical, food & beverage, and other industries across the Front Range.
Download SDS: P-4560
GRADES & SIZES
Air comes in gas form in high-pressure steel or aluminum cylinders. Compressed Air tank refill services are available across Colorado. Our most popular compressed air cylinder sizes and grades are below. Don’t see what you need? Please send us a message, and we’ll respond within one day.
AVAILABILITY
If you’re looking for where to buy compressed air near you in Colorado, General Air makes it easy. Air is available for purchase with a new cylinder. You can also exchange cylinders at any of our 8 Front Range General Air locations. Business customers can purchase air in-store or request delivery.
The table below lists each air cylinder size alongside its volume in cubic feet (CF)
| Size | Volume | CGA | Full Pressure |
|---|---|---|---|
| #1 Steel | 310CF | 590 | 2400 |
| #2 Steel | 234CF | 2200 | |
| #4 Aluminum | 125CF | ||
| #5 Steel | 80CF | ||
| #6 Steel | 60CF |
Trace Impurities
| O2 | N2 | H2O | THC | CO2* | CO* |
|---|---|---|---|---|---|
| 19.5% – 23.5% | Balanced | <2 ppm | <1 ppm | <0.5 ppm | <0.5 ppm |
*Supplied by vendor
The table below lists each air cylinder size alongside its volume in cubic feet (CF)
| Size | Volume | CGA | Full Pressure |
|---|---|---|---|
| #1 Steel | 310CF | 590 | 2400 |
| #2 Steel | 275CF | 2200 | |
| #5 Steel | 125CF |
Trace Impurities
| O2 | N2 | H2O | THC |
|---|---|---|---|
| 19.5% – 23.5% | Balanced | <3 ppm | <1 ppm |
The table below lists each air cylinder size alongside its volume in cubic feet (CF)
| Size | Volume | CGA | Full Pressure |
|---|---|---|---|
| HH (#1 Steel) | 310CF | 346 | 2400 |
| H (#2 Steel) | 233CF | 2200 | |
| M (#4 Steel) | 117CF | ||
| E Steel | 23CF | 950 | |
| E Aluminum | 2015 |
Trace Impurities
| O2 | N2 | CO2 | CO | SO2 | NO2 & NO | Oil |
|---|---|---|---|---|---|---|
| 19.5% – 23.5% | Balanced | <500 ppm | <10 ppm | <5 ppm | <2.5 ppm | None |
The table below lists each air cylinder size alongside its volume in cubic feet (CF)
| Size | Volume | CGA | Full Pressure |
|---|---|---|---|
| #1 Steel | 300CF | 346 | 2400 |
| #2 Steel | 260CF | 2200 | |
| #4 Steel | 117CF |
Trace Impurities
| O2 | N2 | CO2 | CO | Oil |
|---|---|---|---|---|
| 19.5% – 23.5% | Balanced | <1000 ppm | <10 ppm | None |
Common Applications for Compressed Air
- Used as a source of safe air to assist in self-contained breathing apparatuses (SCBAs)
- Medical compressed air cylinders supply safe, medical-grade air for breathing equipment, patient care, and hospital systems.
- Calibrating and checking various impurities of Hydrocarbons in emissions.
- Pharmaceutical manufacturing
- Electronic manufacturing
- Environmental monitoring
- Gas Chromatography
- Flame Ionization Detector as a flame gas
- Flame Photometric Detector as a flame gas
- Atomic Emission Detector as a dry air purge gas
Purchase or Ask a Question
Frequently Asked Questions
Is Compressed Air the same as Oxygen?
No. The terms “air ” and “oxygen ” are often used interchangeably, but they are different. Oxygen is a pure element, while air is a mixture of several elements, primarily Nitrogen and Oxygen.
What is Ultra Zero Air?
Ultra Zero or zero air is air that contains a very low amount of hydrocarbons — typically less than 1ppm.
Is Compressed Breathing Air (Grade D) the same as USP (Medical) Air?
No. OSHA defines Grade D air as suitable for breathing when it has the following characteristics: Oxygen content of 19.5-23.5 percent, hydrocarbon (condensed) content of 5 milligrams per cubic meter of air or less, carbon monoxide content of 10 parts per million (ppm) or less, and carbon dioxide content of 1,000 ppm or less.
Industries We Serve
Manufacturing: Compressed air cylinders provide a portable, reliable air supply for confined spaces. They help when oxygen levels are low or contaminants are present.
Industrial: Supplied Air Respirators (SAR) used in painting, sandblasting, and chemical handling draw air from compressed cylinders. They deliver a steady supply of clean air to workers.
First Responders: Firefighters and emergency responders use compressed air cylinders to fill SCBA units. These units provide breathable air in hazardous or oxygen-poor environments.
Laboratory: Compressed air acts as a carrier and combustion gas in gas chromatography. It also serves as a zero-grade calibration gas for calibrating and testing sensors, detectors, and other analytical equipment.
Medical: Cleanroom environments and drug manufacturers require high-purity compressed air to control contamination and meet regulatory requirements.