(DCP) Dry Chemical Powder - Fire Extinguisher A dry chemical extinguishing agent used on Class A , Class B and Class C fires are known as Monoammonium-phosphate , ABE powder, ABC Dry Chemical, Tri-class or Multi - purpose Dry Chemicals. It uses a special liquid and silicone monoammonium phosphate powder. The ABC dry chemical is usually a mixture of monoammonium phosphate and ammonium sulfate , which is previously activated. The mixture between the two agents is 40-60%, 60-40%, or 90-10%, depending on local worldwide standards. The USGS uses a similar blend, called FOS Check G75F. How does a Dry Chemical Powder fire Extinguisher work General Uses - Dry chemical powder used on all classes of fire. Prevents chain reaction by smuggling. The pressure is generated by the gas cartridge stored inside the cylinder. Its force will remain for 2 minutes and can reach 10 - 15 feet. ...
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