FLOW32 Whitlam Flow-Aide 1 Quart System Descaler Scale, lime and rust buildup decreases the efficiency of tankless water heaters and other appliances. Buildup can restrict flow and ultimately shut down a unit. Flow-Aide System Descaler quickly dissolves water scale, lime, rust, and other water formed deposits, restoring efficiency to most all appliances. Flow-Aide System Descaler is a non-acid, non-toxic concentrate which is certified to NSF/ANSI 60 for use as a cleaner in potable water systems. Non-CorrosiveNon-ToxicFully BiodegradableSafe to HandleZero V.O.C.Uses: Tankless Water HeatersHydronci BoilersHeat ExchangersIce MachinesHumidifiersChillersVacuum PumpsCondensersEvaporatorsWater TanksPotable WaterlinesWater Operated Equipment Flow-Aide is biodegradable with a BOD value of 16 mg/l. This normally allows the product to be water flushed down sewers. Check with local ordinances and regulations in your area prior to disposal.