Description 1500 Micron Natural White Solid Core Conservation Board Sold in packs of 5 sheets 810 x 1210mm Board • 100% bleached cellulose • without the usage of recycling fibres • free of wooden fibres • Kappa level 1 – 2 = lignin-free • pH 7.5 – 10.0 = acid-free (in accordance with ISO 6588-1:2020) • alkaline buffer > 3% natural calcium carbonate (GCC) • sizing: neutral/synthetic (without alum additive) • without optical brightening agents • Photographic Activity Test (PAT) passed in accordance with ISO 18916:2007 Glue used for lamination • Emission-free starch-based adhesive (based on potato starch) • free of softeners and plasticizers • VOCs-free • free of solvents and softening agents • pH approx. 7.0 • ageing-resistant (permanent) • Photographic Activity Test (PAT) passed in accordance with ISO 18916:2007 This quality corresponds to the technological basis of the following standards: DIN EN ISO 9706 Information and documentation – Paper for documents – Requirements for permanence ANSI/ NISO Z.39.48 American National Standard for Permanence of Paper for Publications and Documents in Libraries and Archives DIN 6738:2007 Highest level of permanency LDK 24-85
