What is BC powder made of

What is the content of a fire extinguisher?

Fire class and content

In addition to a propellant, a fire extinguisher (€ 40.99 on Amazon *) of course always contains an extinguishing agent. This extinguishing agent differs depending on the purpose. Therefore, the fire class should be carefully considered, especially for private households.

Pay attention to the fat fires

For example, fire class F, i.e. burning fat or cooking oil, must never be extinguished with water. In the kitchen area, therefore, only a special fat fire extinguisher should be installed. Neither the ABC powder extinguisher nor a foam extinguisher may be used for this purpose.

Fire class from A to F

  • Class A - solid substances - foam, ABC powder or fire blanket
  • Class B - liquids or substances becoming liquid - foam, ABC powder and BC powder
  • Class C - gaseous substances - ABC powder, BC powder
  • Class D - metal - dry sand, D powder, metal fire powder, or dry cement
  • Class F - fat - fat fire extinguisher, fire blanket, special suitable extinguishing spray

Separation of content and propellant

Depending on what type of fire extinguisher it is, the content, i.e. the extinguishing agent, is either stored separately from the propellant gas or is mixed with one another from the start. If the propellant is stored separately in the container, then an additional container is required to store the propellant gas in the fire extinguisher.

Charging extinguisher or permanent pressure extinguisher

The extinguishing agent and propellant gas are stored mixed in the permanent pressure extinguisher. This places higher demands on the strength of the housing. But it is also lighter and easier to handle in a private setting.

In principle, the contents of a charge extinguisher are the same. However, they only flow into each other when the trigger is actuated. This means that this fire extinguisher needs a little time to be operational.

In the home, foam is the better choice as an extinguishing agent. The powder, which was very popular in the past, ruins your electronic devices because the powder dusts like a fine cloud from the fire extinguisher and penetrates the ventilation slots of TVs, stereo systems and laptops. The devices will then only be functional in the rarest of cases.


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