All-Purpose Extinguisher 1
All-Purpose Extinguisher 1 : (Fire Pr) A chemical fire extinguisher suitable for fighting fires involving ordinary combustibles, flammable liquids, and electrical equipment. An all-class (A, B, and C) fire extinguisher. Note: No single extinguisher or extinguishing agent is ideal for all classes of fire. All-purpose, there-fore, means that it is relatively safe to use, although its effectiveness may be doubtful for the particular fire that is burning