Phos-Chek WD881 – Class A Foam

Water, alone can be inefficient for fighting fires depending on fuel type, fuel loading and fire conditions. Water as it is converted into steam, has tremendous capacity to absorb and carry away heat. Unfortunately water’s strong surface tension causes it to bead up and roll off most fuels and away from heat too fast to be able to absorb its full heat capacity. This effect reportedly makes water only 5% to 10% efficient, thus requiring larger volumes to extinguish a given fire.

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