Nitrogen, Helium, and Argon Gas Cylinders - Identification & Uses #3301724 (License: Personal Use)

This illustration shows three standard compressed gas cylinders, each color-coded and labeled per international safety conventions: gray for nitrogen (N₂), brown for helium (He), and green for argon (Ar). The black valve caps and clear chemical symbols aid quick identification in labs, welding shops, and medical facilities. Proper recognition helps prevent hazardous mix-ups during handling and usage.

Used in educational materials, safety training, industrial manuals, and HVAC/welding guides to teach gas cylinder identification; matches user intent for visual learning, workplace safety compliance, or equipment familiarization.