Epson's UltraChrome GS2 ink builds on the strengths of UltraChrome GS. It is compatible with a wide range of industry standard media and features formulation that provides for an extended color gamut as well as enhanced durability. It is light fast of up to 3 years outdoors without the need for lamination.UltraChrome GS2 ink is nickel-free and features a low odor. Usage requires no special ventilation, allowing SureColor printers to be installed and operated in office environments.