Dry Chemical Powder Systems

Chemguard has supplied high-quality fire-fighting dry chemicals for more than two decades. Our full line of Class A, Class B, and Class C dry chemicals delivers superior and consistent performance. In addition, Chemguard fire-fighting dry chemical products are compatible with foam concentrates, allowing twin-agent application.

Available in a wide range of container sizes – 50-pound pails to 2,000-pound bulk bags – Chemguard’s dry chemicals are classified for discharge performance and compatibility with extinguishers and other brands. Dry chemical fire extinguishers can be recharged with our agents as a substitute or replacement for original agents in accordance with NFPA 10 and UL 299. From refills for the industry’s smallest extinguishers to mobile and fixed installations and training facilities, Chemguard has the right fire-fighting dry chemical for the job.

Purple K

Chemguard “PK”, Potassium Bicarbonate Based dry chemical, is a premium powder suitable for use in high-risk areas such as: refineries, chemical plants and airfields where superior fire extinguishing capabilities are of paramount importance.   It is suitable for use on either Class B or C type fires.  Purple K is suitable for use as a recharge agent in most manufacturers fire extinguishers that utilize potassium bicarbonate based dry chemical powder. Airports have recognized the capability of “PK” and use it extensively in twin agent fire extinguishing systems.  It is also used in large “PK” dry chemical fixed systems covering LNG pumping stations. 


When “PK” dry chemical powder is used on fires involving flammable liquids, it is generally accepted that when the powder is introduced directly into the fire area, it extinguishes the fire by interfering with the chemical chain reaction taking place in the combustion zone.


All Chemguard dry chemical powders are considered foam compatible when used in conjunction with foam solutions generated by Chemguard. Manufactured foam concentrates such as AFFF, AR-AFFF, High Expansion, Supertrain and Class “A” foams.