Phos-Chek WD881 Class A Foam
Phos-Chek WD881 Class A Foam concentrate is specially formulated to make water more effective for firefighting. The unique combination of surfactants in WD881 significantly reduces water’s surface tension and, when mixed with air, creates a superior foam blanket that surrounds fuels with a thick layer of water. This creates a barrier between the fuel and the fire, knocking down the fire faster than water alone, and allowing fire fighters to see the areas of application. Making the water more effective reduces the amount of water needed to extinguish the fire, reduces water damage and increases fire fighter safety through quicker knockdown and reduced mop-up/overhaul requirements.
WD881 is highly effective for fighting Class A fires when mixed with water at use rates of 0.1% to 1.0%. It has proven effectiveness in many applications including Compressed Air Foam Systems (CAFS), structural firefighting, forest fire suppression and prescribed burning, mine fires, industrial Class A fires, and for extinguishing hydrocarbon spill fires.
Phos-Chek WD881 is the most concentrated Class A foam product available today. Other products contain significantly more water in the concentrate. This extra water means higher use rates will be required to achieve expected results.
WD881 does not contain fluorinated surfactants such as PFOS/PFOA. Fluorinated surfactants are used in Class B foam concentrates and are necessary to form a film on flammable liquid fires.
Class B foams should not be used on Class A fires. Never mix Class A and Class B foam concentrates.
|Package Size||5 Gal Pail, 55 Gal Drum, 260 Gal Tote|
|Product Form||Liquid Concentrate|
Phos-Chek WD881 Class A Foam for Wildland Fire Management Qualified by US Forest Service in Accordance with Forest Service Specification 5100-307a as Amended. All ICL Fire Safety Class A foams, including First Response and Phos-Chek WD881 and WD881C Class A foam concentrates have been tested and qualified for use by the USDA Forest Service.