Eco Series Inks ensure: Vibrant, brilliant colors and Excellent color gamut Completely free of Hazardous Air Pollutants (HAPs), as defined in the Federal 1990 Clean Air Act Color and density consistency between different batches Two-year outdoor weather resistance Minimum maintenance whether the printer is in use or idle No clogged nozzles thus ensuring excellent print quality on a wide range of vinyl and paper substrates More than 18 months shelf time and less wear on the print heads More Competively priced