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International O2 Cylinder White — FRCA Primary MCQ

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EasyPhysics & Clinical MeasurementInternational O2 Cylinder WhiteFRCA Primary

Regarding oxygen cylinder colour coding the international standard (ISO) body and shoulder colour for oxygen is:

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: D — White body and white shoulder

The international standard (ISO 32) specifies white body and white shoulder for oxygen cylinders. The UK traditional colour is black body with white shoulder. Both systems are in use. The transition to international colours is ongoing. Always check the cylinder label — colour alone is not sufficient for identification.

Reference: Al-Shaikh Stacey 2019 Essentials of Anaesthetic Equipment