Water |
Class A (organic materials like wood, paper, fabric) |
Class B (flammable liquids), Class C (gases), electrical fires, Class F (cooking oils) |
Foam |
Class A (organic materials), Class B (flammable liquids) |
Electrical fires (unless labeled safe), Class F (cooking oils) |
Dry Powder |
Class A (organic materials), Class B (liquids), Class C (gases), Class D (combustible metals, if specified) |
Class F (cooking oils), confined spaces (causes visibility and breathing issues) |
Carbon Dioxide (CO₂) |
Class B (flammable liquids), electrical fires |
Class A, Class C, Class D, Class F fires |
Wet Chemical |
Class F (cooking oils and fats), Class A (organic materials, in some cases) |
Class B (liquids), Class C (gases), electrical fires (unless specified) |
Specialist Extinguishers (e.g., Metal Powder, Clean Agent) |
Class D (combustible metals like magnesium, sodium), or sensitive equipment (clean agents for electronics) |
Fires outside their specified class |