Dry chemical extinguishers have a sodium bicarbonate base and are effective on Class B and C fires.
Multipurpose dry chemical extinguishers have a monoammonium phosphate base and are effective for Class A, B, and C fires.
Common characteristics of dry chemical extinguishers include:
Capacity. Approximately 10-20 seconds discharge time
Range. Standard range is 8-12 feet.
Pressure. Standard pressure is 175-250 psi.
