| Exceptional quality for the discerning artist! Pack of eight 12 in. x 18 in. archival sheets. More than 25 layers of pastels can be applied; tests show paper will last 300 or 500 years. Accepts all toning and underpainting mediums. Extremely durable; brush it out, scrub it wet and rework it without changing tooth. White sheets.Professional Grade is archival quality, acid free cardstock with buffered, double-primed surface.Museum Grade meets Library of Congress standards for permanence, and features 100% cotton rag, naturally acid free triple-primed surface (single-primed on back). |