KalpEX Dry Chemical Powder stored Fire Extinguishers are specially designed for high performance and to achieve rapid Fire knock down capability.. These portable extinguishers are suited for industrial, commercial and Domestic Fire protection needs. These extinguishers contain a siliconized sodium bicarbonate based dry chemical with free flowing and non-caking additives. It is very economical, Class B & C protection with lower initial cost and recharging. This chemical smothers fires in flammable liquids and pressurized gases.