Yes, departments can place Novacool Foam directly into their tanks without any problems. Novacool Foam is usable with eductors, injectors, CAFS, or batch mixed; its non-corrosive and has no adverse effects on tanks pumps, valves, or portioning equipment. Batch mixing is particularly necessary for departments that have older trucks or smaller brush trucks that may not have foam-proportioning systems. Novacool UEF Foamis applied at 0.5%. A 500-gallon tank of water only requires 2.5 gallons of Novacool Foam. A brush truck with a 250 gallon tank only needs to carry one (1) five gallon bucket of Novacool Foam. This one gallon bucket will treat 5 tanks of water at 0.4%. Novacool Foam can be used all the way down to 0.2% for certain class A fires and still be effective.