Work out oxygen cylinder duration instantly with clear inputs, formula shown and shareable results.
Multiplies cylinder gauge pressure by water capacity to get the free gas volume, then divides by the delivery flow rate to give run time.
Cylinder duration
Available gas (L) = gauge pressure (bar) x water capacity (L); duration (min) = available gas / flow (L/min)
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
No. A reserve of around 20% is normally kept, so subtract that from the usable volume when planning transfers.
Convert first: 1 bar is about 14.5 psi, so divide a psi reading by 14.5.