It is very important to choose the proper fire extinguisher. Extinguishing agents have differing atrributes, which make them more or less appropriate for use, depending on the class of fire, and the setting in which they will be used. Some agents can be used on more than one class of fire, and some have very specialized characteristics that make them particularly suitable for a specific class of fire situation.
The label on each fire extinguisher has a color coded box that helps users determine at a glance which class of fire it can be used on, the agent it contains, and the class of fire and type of setting for which it is listed. The following links describe each type of extinguishing agent: multi purpose dry chemical, regular dry chemical, purple K chemical, carbon dioxide, wet chemical, halotron, water, and foam. For a quick reference, the following guide to fire extinguishing agents is provided: