Air Compressor:
WHAT IS COMPRESSED AIR MADE OF?
Compressed air is made of the same air you breathe in and out, but that air is compressed into a smaller size and kept under pressure. When you take atmospheric air and then physically force it into a smaller volume, the molecules take up less space and the air is compressed. Atmospheric air and compressed air are both made up of: 78% Nitrogen 20-21% Oxygen 1-2% water vapor, carbon dioxide & other gases The “ingredients” in the air don’t change when it’s compressed—just the amount of space those molecules take up.