The U.S. Forest Service and other agencies each year drop tens of millions of gallons of fire retardant, mostly an ammonium phosphate-based slurry called Phos-Chek, around wildfires to coat ...

The U.S. Forest Service and other agencies each year drop tens of millions of gallons of fire retardant, mostly an ammonium phosphate-based slurry called Phos-Chek, around wildfires to coat vegetation ...

Phos-Chek long-term fire retardants, Class A foams, and water enhancing gel are the world’s leading chemical solutions for managing wild land, industrial and municipal fires. In 1962 ...

It’s a scene that’s become routine with big blazes in the West. A plane dips low over a smoldering ridgetop and unleashes a ribbon of fire retardant, coating the hillside a bright pink.