CHEMGUARD Class “A” is a non-corrosive, non-toxic,
biodegradable foam concentrate. When mixed with water
in the correct proportion, it changes the properties of
water. It reduces the surface tension of the water, and
produces foam, which allows the water to cling to vertical
or horizontal surfaces without run off. This allows the water
to absorb more heat and provides greater penetration into
Class A fuels.