How are nitrox cylinders identified?
It is important to mark nitrox cylinders in a distinctive way due to the risks of diving without being sure of the contents of the cylinder. The standard colour markings are: a yellow body with a 4″ wide green band near the top, the green band may include the neck portion of the cylinder. The cylinder should also be tagged with the nitrogen and oxygen percentages. As an added safety assurance you may also want to mark it with the MOD, the fill pressure and the fill date. Appropriate labels, tags and stickers are available from ANDI. Any shop which supplies nitrox fills should also have these markers and should insist on adequate markings on the cylinder.