How to Identify Gas Cylinders by Markings for Safety & Compliance

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Oxygen

Oxygen tanks often have white tops. White means oxygen inside, which is needed for work and health uses. Always check markings to confirm it’s oxygen.

Nitrogen

Nitrogen tanks usually have black tops. Black shows nitrogen inside, used for food storage and making electronics. Check markings match the color for right ID.

Carbon Dioxide

Carbon dioxide tanks mostly have gray tops. Gray means carbon dioxide, used in drinks and fire tools. Make sure markings say it’s carbon dioxide.

Argon

Argon tanks often have dark green tops. Green means argon inside, used for welding and lights. Always trust markings to know the right gas type.



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