Schools are increasingly promoting an inclusive agenda. As a result, science and D&T departments may find students who use medical oxygen are following a normal school curriculum and are in their classes.

The combustion of any fuel, eg, acetylene, propane or methane, with oxygen from a cylinder rather than air at normal or increased pressure, gives a hotter flame that is often easier to control.

Small, portable gas fuelled torches used to toast food items, such as meringues and crème brulee. Usually with integral gas cylinders, but may be detachable.

The creation of a joint using a filler of similar composition to the metal being joined. The combustion of the fuel gives rise to hazardous fumes.