Which term describes any non-refillable receptacle containing compressed gas with a self-closing release device?

• A. Aerosols
• B. Gas cartridge
• C. Pressure vessel
• D. Cylinder

Answer: (A)

Aerosols are defined as non-refillable receptacles containing gas under pressure that release their contents through a self-closing release device. This combination—being non-refillable and featuring a valve that automatically closes after dispensing—fits the description precisely. Gas cartridges are typically small, portable gas sources used inside devices and aren’t inherently defined by a self-sealing valve. A pressure vessel is a general term for any container built to hold gas at high pressure and is usually refillable. A cylinder also refers to a larger gas container, typically refillable and not characterized by a self-sealing release mechanism.