ODO-FREE™ is a highly concentrated proprietary blend of ferric and ferrous iron, designed expressly for optimal dissolved sulfide control. ODO-FREE™ effectively treats hydrogen sulfide and phosphorous to the same levels as ODOPHOS®, but in some cases, provides a more cost effective chemical control of dissolved sulfides.

ODO-FREE™ aids in phosphorous and solids removal in wastewater treatment facilities, and is applicable in longer detention times.  It is ideal for gravity collection lines, lift stations, wet wells, and influent structures.  It reduces dissolved sulfide to less than 0.5 milligrams per liter.