Types of portable fire extinguisher?

1. Water extinguisher
2. Foam extinguisher
3. Dry powder extinguisher
4. Carbon dioxide (CO2) extinguisher
5. Wet chemical extinguisher
6. Clean agent extinguisher
7. Class K extinguisher (specifically for kitchen fires)

Water Extinguishers (Type A)

- Suitable for Class A fires (ordinary combustibles, such as paper, wood, and fabrics)
- Extinguishes fire by cooling and wetting the fuel
- Can be pressurized or non-pressurized

Dry Chemical Extinguishers (Type B:C)

- Suitable for Class B (flammable liquids) and Class C (electrical) fires
- Extinguishes fire by smothering the fuel and interrupting the chemical reaction
- Can be pressurized or non-pressurized

Carbon Dioxide Extinguishers (Type C)

- Suitable for Class C (electrical) and Class B (flammable liquids) fires
- Extinguishes fire by displacing oxygen and smothering the fuel
- Non-pressurized, typically stored as a liquid that expands into a gas when released

Clean Agent Extinguishers (Types BC:Halon, BC:HCFC, BC:FM-200)

- Suitable for Class B (flammable liquids) and Class C (electrical) fires
- Extinguish fire by displacing oxygen and interrupting the chemical reaction
- Stored as a liquid or gas and released as an aerosol or vapor

Wet Chemical Extinguishers (Type K)

- Suitable for Class K (kitchen fires)
- Extinguishes fire by forming a thick foam that smothers the fuel and cools it
- Pressurized, typically contains a potassium-based solution

Special Purpose Extinguishers

- Foam Extinguishers (Type A:B): Suitable for Class A (ordinary combustibles) and Class B (flammable liquids) fires, especially those involving flammable liquids that form deep-seated fires
- Halon Extinguishers (Type BC): Suitable for Class B (flammable liquids) and Class C (electrical) fires, but are no longer in common use due to environmental concerns
- Dry Powder Extinguishers (Type D): Suitable for Class D (flammable metals) fires, but are typically only found in specialized applications