With the grammage of 350 gsm museum etching is an oba free artists board made of 100 cotton linters the new quality features the typical texture of a copperplate board due to its surface texture and natural white colour it is the ideal medium for art reproductions it also suits photographs with grey nuances due to the ecxclusive use of cotton linters a fibre difficult to extract from the cotton plant museum etching complies with the high archival standard for age resistance