Never run out of oxygen!
This app allows, knowing the capacity and the pressure of a cylinder of oxygen for medical use, to know how much remaining time remains to the patient, depending on the extent that seglie to administer.

To speed up the calculation operations, 5 types of cylinders are already pre-loaded:
* Maxi: 10 liters.
* Large: 7 liters.
* Average: 5 liters.
* Small: 2 liters.
* Torpedo: 0.5 liters.