We are supplier of amalgam separator. www.amalgamseparator101. com t Our unit is 99.6% effective in clinical trials. dealer pricing available. This is the product now being used by the U.S. Navy. Filter traps debris at chair side not building up on inside of pipes. No human contact required because unit is sealed and ready for disposal. Lasts between 4-6 months or longer depending upon chair activity. Our web site is www.amalgamseparator101.com Thank you David [email protected] .