There are different kinds of fire extinguishers Adelaide that are available, and they may be classified in any of several ways, from their sizes to their potency. The most common classifications relate to their specific uses as well as their contents, though. In Australia, fires can be classed into any of (and sometimes, as a mixture of) 6 different categories, and these have a bearing on the classifications and labels put on flame extinguishers. The classes are the following:
Class A Fire – composed of normal combustible materials, often cellulose-based items like paper and wood
Class B Fire – composed of inflammable liquids
Class C Fire – composed of inflammable gases
Class E Fire – composed of electrically-active equipment and wiring
Class D Fire – composed of combustible metals
Class F Fire – kitchen fires
Fire extinguishers Adelaide are often classified according to which of these fire classes they can put out effectively, with some extinguishers being capable of putting out more than one fire class and some being restricted to only one type. For example, your standard air-pressurised water extinguisher is typically good only for putting out paper or wood fires (Class A). On the other hand, there are dry chemical extinguishers that can deal with Class A, B, and C fires quite well.
Not all chemical extinguishers are composed of dry elements, though. There are wet ones and dry ones. In Australia, fire extinguisher types are denoted by colour-codes and stripes for convenience. Water extinguishers are plain red, for example. Then there are the foam extinguishers, which have red canisters with one broad blue stripe: these are used for fighting both Class A and B fires. A new type of extinguisher in the country would be the non-halon liquid extinguishers that come in a red canister with a yellow stripe: these can deal with A, B, C and E fires. There are also the wet chemical fires that sport an oatmeal or cream band on their canisters and which are used for A and F fires. Dry chemical extinguishers get a white band and are for A (to some extent), B, C, E and F fires. Finally, the black-banded fire extinguishers are the carbon dioxide extinguishers that can deal with A, D and E fires as well as to some extent with B, C and F fires.