Guide to Classes of Fires and Methods of Extinguishment 

Class A Fire:Wood, Paper, Textiles and other ordinary combustible materials.

To Extinguish a Class A Fire Use:

• Pressurized Water
• ABC Dry Chemical (All Purpose)
• Soda Acid Foam

Class B Fire: Flammable Liquids: Oils, Solvents, Grease. Paint, etc.
To Extinguish A Class B Fire Use:

• BC Dry Chemical (regular)
• Carbon Dioxide Foam

Class C Fire: Live or energized Electrical or Electronic Equipment
To Extinguish A Class C Fire Use:

• Carbon Dioxide
• BC Dry Chemical (regular) (This is effective but will destroy electronic gear.)

Class D Fire: Metals: Magnesium., Aluminum, Sodium, Potassium, Zirconium, Titanium, etc.
To Extinguish a Class D Fire Use:

• Special Metal Extinguishers
• Special Metal Powders
• The ordinary extinguishers found in the building should not be used on metal fires because a violent reaction may result.