With a grammage of 350 gsm Museum Etching is an OBA free artist's board made of 100% cotton linters. The new quality features the typical texture of a copperplate board and due to its surface texture and natural white colour it is the ideal medium for art reproductions and photographs with warm shades or grey nuances. Due to the exclusive use of cotton linters, a fiber difficult to extract from the cotton plant, Museum Etching complies with the high archival standard for age resistance.