This liquid ammonium sulfate (LAS) feed system is preassembled, factory-piped, wired and tested, offering low installation costs and a typical installation time of two hours. Unlike aqueous ammonia, LAS has an indefinite storage life and is odorless and non-toxic. The company’s two-tank upflow saturator and feed system technology can produce a 40% liquid ammonium sulfate solution from solid ammonium sulfate for approximately $3 per gal. A skid-mounted enclosure is available for protection from the environment in outdoor and remote locations.