Oxygen tank
An oxygen tank is an oxygen storage vessel, which is either held under pressure in gas cylinders.
The vast majority of divers breathe air or nitrox stored in a diving cylinder. A small minority breathe trimix, heliox or other exotic gases. Some of these may carry pure oxygen for accelerated decompression or as a component of a rebreather. Some shallow divers, particularly naval divers, use oxygen rebreathers.
* Oxygen cylinders have black body with a white top
* Nitrous oxide cylinders are completely blue
* Entonox cylinders have a blue body with a top divided into quarters alternating blue and white
* Medical air has a grey body with a white and black top
* Carbon dioxide is grey with a black stripe on the body
COMPLICATIONS
1. explosion
2. oxygen toxicity
3. barotrauma (must use a regulator)
4. trauma from dropping the cylinder on someone!
