All of the prints are made with seven color archival pigment inks. These inks are nothing like the ones that you use in your home printer nor the ones used for mass-produced factory prints. They are expensive museum-quality pigments formulated specifically to work with the range of hand-finished papers such as the Lyson Standard Fine Art Paper which is a smooth surfaced Acid free WaterColor paper, warm white or cream in appearance (310gsm / up to 2880dpi) and fully compatible with dye and pigment based inks.
According to industry tests, under normal circumstances, they will last for generations; some pigments makers claim up to 80 years. Each of them comes with a certificate that has the printing company's mark of quality embossed into a metallic gold seal at the bottom of it.