The 6000 illustration board offers the highest performance of any of the Nielsen Bainbridge boards. The surface paper is identical to the Series 4000 but the core and backing are solid white and acid- and lignin-free. As a working surface, it is compatible with all types of media for artists concerned with permanence. Inking produces consistent and exceptional lines. The surface can be stripped off the backing board for laser scanning or repositioning sections of art.