GenTech Certified: The solid backgrounds of the GenTech service staff in the fields of GC, GC/MS, LC and LC/MS enable us to proudly offer a full ONE (1) YEAR WARRANTY on these products. GenTech certification means that the instrument has been meticulously refurbished and fully tested before being shipped to the customer. GenTech Certified instruments are considered "better than new" because of their quality, the warranty we offer and the money our customers save when purchasing our refurbished equipment.