Class A fires with flammable solids such as wood, plastic and paper.Class B fires involving flammable liquids and electrical fires.Class C fires involving gases.Class D fires involving metals such as magnesium, potassium and titanium.Class F fires with cooking oils and fats.

The ease in which a substance will catch fire.

A gas with a low flammability limit that can be readily ignited when mixed with air.

A liquid which can readily catch fire.

Solids that are liable to cause fires through friction or absorption of moisture.

The minimum temperature in which the vapour of a substance, when mixed with oxygen, will ignite when a flame is applied.

A method of ventilation, typically in the form of a cabinet with a moveable safety-glass front window. The air is drawn away from the worker or workspace to prevent contact with harmful vapours or gases given off by hazardous substances.