Cylinder colors characteristic of certain types of anesthetic gases.. Air. Oxygen. Nitrous oxide. Cyclopropane. Coal-free gas

We can distinguish between different gases by knowing the color of the cylinder as in the following table:
- Air: black with a white neck.
- Oxygen: white or green.
- Nitrous oxide: blue.
- Cycloparban: Orange.
- Gas without water CO: gray.