A portable fire extinguisher can save lives and property by putting out a small fire or suppressing it until the fire department arrives. Extinguisher Agent Class of Fire Major Ingredient Risk Covered Dry Chemical ABC Mono-ammonium Phosphate & Ammonium Sulphate Wood, paper, textiles & plastics Flammable liquids Burning gasses Dry Chemical BC Sodium Bicarbonate Flammable liquids Burning gasses Dry Chemical BC Potassium Bicarbonate Flammable liquids Burning gasses Dry Chemical (Monnex) BC Potassium Bicarbonate Urea Complex Flammable liquids Burning gasses Dry Chemical D Sodium Chloride Metal fires Water A Water Wood, paper, cloth, plastic, etc.