´╗┐Medidenta's amalgam separator program features the M.A.R.S. Liberty BOSS amalgam separator, which is ISO 11143-certified as being 99.9% effective. It is also maintenance-free for up to 3 years (one to 7 chairs), which means means not having to change a filter for its entire life cycle. Additionally, office staff won't risk exposure to harmful mercury or biohazardous waste since there is no need for a filter change. For more information, call (800) 799-3858.