Regular (BC) Dry Chemical Fire Extinguishers extinguishers contain a siliconized sodium bicarbonate based dry chemical with free flowing and non-caking additives. Regular dry chemical fire extinguishers are an economical choice for Class B & C protection with lower initial cost and recharging. This chemical smothers fires in flammable liquids and pressurized gases and will not conduct electricity back to the operator.
Class B: Flammable Liquids-Gasoline, oil, grease, acetone (includes flammable gases).
Class C: Electrical Fires, Energized electrical equipment fires (anything that is plugged in).