Water Pressure Fire Extinguishers (Amerex 240) utilizes the cooling, soaking and penetrating effect of a 45-55 ft. stream of WATER. The 55 sec. discharge time makes it very effective for inexperienced operators for use on Class A fires.
Water Mist Fire Extinguishers (Amerex 270NM and B272NM) are the best option for MRI rooms as they are non-toxic and non magnetic fire extinguishers that are rated for class A and C fires.