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There are four main types of classification and combinations for which specific kinds of fire extinguishers can be used. The table below points out the proper agent to use for each case of fire:


Class of fireType of hazardWaterFoamABC Dry chemicalCO2Halon
AOrdinary Combustible Wood, Cloth, Paper RubbishYesYesYesNoNo
BFlammable Liquids and Grease, Gasoline, Oil, Paint, Grease, Natural Gas, Manufactured GasNoYesYesYesYes
CElectrical Equipment Wiring, Controls, Panels, MotorsNoNoYesYesYes
A + BCombination of Ordinary Combustible and Flammable Liquids and GasesNoNoYesNoNo
A + CCombination of Ordinary Combustible and Electrical EquipmentNoNoYesNoNo
B & CCombination of Flammable Liquids and Gases and Electrical EquipmentNoNoYesYesYes
A, B & CCombination of Ordinary Combustible and Flammable Liquids & Gases and Electrical EquipmentNoNoYesNoNo

Carbon dioxide extinguishers
Carbon dioxide extinguishers should be of black colour. CO2 is stored in these extinguishers as a liquid under pressure and is discharged onto the fire as an electrically non-conductive gas, which extinguishes burning material bu excluding oxygen
Moreover, CO2 is a clean, dry gas and a non-conductor of electricity. It leaves bi residue and can be used ib delicate electric equipment.

Dry powder extinguishers
Dry powder extinguishers should be of blue colour. BC powder is a foam compatible fire extinguishing dry powder based on sodium bicarbonate with flow and moisture repellent additives.
ABC powder is a fire extinguishing dry powder with a high ammonium phosphate content having the ability to form an oxygen excluding crust over hot surfaces.

Foam extinguishers
Foam extinguishers should be of yellow colour. For inflammable liquid fires it is essential to choose the foam concentrates suitable for the specific fire. The following foam concentrates are available for various fire types:

1.Fluoroprotein foam     3%     Low expansion foam
2.AFFF (Aqueous Film Forming Foam)     3% or 6%     Low expansion foam
3.Protein foam     3% or 6%     Low expansion foam
4.Alcohol resistant fluoroprotein foam     6%     Low expansion foam
5.Alcohol resistant AFFF foam     6%     Low expansion foam
6.Synthetic foam     3%     High expansion foam

Protein Foam Concentrate - Regular
Standard or Regular protein Foam can be applied on flammable liquids as well as on toxic non-flammable liquids to reduce vapor release.

Fluroprotein Foam Concentrates Plus - F & FP
The best form of protein based foam liquid combining rapid-fire knockdown with excellent burn back resistance. Stable and yet build foams, which quickly smother fires involving hydracarbons, may be produced using low expansion equipment.

Alcohol Resistant Aqueous Film Forming Foam Concentrate
All-purpose AFFF is an alcohol resistant type foam liquid (AR) specially formulated to extinguish alcohol or polar solvent fuel fires in addition to fires involving hydrocarbon fuels.