A full oxygen cylinder contains approximately how many liters?

A full oxygen cylinder contains approximately how many liters?

• A. 360 L
• B. 520 L
• C. 660 L
• D. 780 L

Answer: (C)

Gas in anesthesia cylinders is stored under high pressure, so the amount you have is expressed in liters of gas at standard conditions rather than just the bottle’s physical size. For the common portable oxygen cylinder used in operating rooms, a full fill yields about 660 liters of oxygen. This corresponds to a typical full-pressure around 1900 psi and the cylinder’s internal volume, giving a practical, standard reference value of roughly 660 L when full. This means if you’re delivering oxygen at a steady rate, you can estimate how long the cylinder will last by comparing the current pressure to the full-pressure level and multiplying by the cylinder’s nominal volume. For example, at 1 L/min, a full cylinder would provide about 660 minutes of oxygen, though real-life factors like regulator performance and leaks can affect the actual duration. Other listed numbers don’t match the standard full capacity of a common portable cylinder, which is why 660 liters is used as the reference amount.

Gas in anesthesia cylinders is stored under high pressure, so the amount you have is expressed in liters of gas at standard conditions rather than just the bottle’s physical size. For the common portable oxygen cylinder used in operating rooms, a full fill yields about 660 liters of oxygen. This corresponds to a typical full-pressure around 1900 psi and the cylinder’s internal volume, giving a practical, standard reference value of roughly 660 L when full.

This means if you’re delivering oxygen at a steady rate, you can estimate how long the cylinder will last by comparing the current pressure to the full-pressure level and multiplying by the cylinder’s nominal volume. For example, at 1 L/min, a full cylinder would provide about 660 minutes of oxygen, though real-life factors like regulator performance and leaks can affect the actual duration.

Other listed numbers don’t match the standard full capacity of a common portable cylinder, which is why 660 liters is used as the reference amount.