Hi all, You might want to contact Patricia Mealey with Alpha-Fry Technology at 800-742-1074 or [log in to unmask] . They buy back material at fair market value based on volume. Also, she's very familiar with EPA manifesting regulations. Regards, Ed Popielarski QTA Machine 10 Mc Laren, Ste D Irvine, Ca. 92618 Phone:949-581-6601 Fax: 949-581-2448 Cel: 949-337-2578 WWW.QTA.NET