A grey-blue solid dyed board with special surface treatment, extremely dirt-resistant, erasable and resistant to dry wiping. Due to a high long fibre content, the board has an excellent grooving/creasing characteristic.

The board is free of optical brightening agents (OBA-free) and has passed the Photographic Activity Test (PAT) in accordance with the ISO 18916:2009 standard.

Available size: 100x140 cm.

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We confirm that our 047 archival boards meet the following conditions:

 Board

•  100 % bleached cellulose (alpha cellulose)

•  Without the usage of recycled fibres

•  Free of wooden fibres

•  Kappa level 1 – 2 = lignin-free

•  pH-value 8.0 – 9.5 = acid-free (in accordance with ISO 6588-1:2005)

•  Alkaline reserve (buffer) > 3 % natural calcium carbonate (GCC)

•  Sizing: neutral/synthetic (without alum additive)

•  Photographic Activity Test (PAT) passed in accordance with ISO 18916:2009

•  Sizing according to Cobb₆₀ < 25

•  Without optical brighteners (OBA-free)

•  Lightfastness 7 – 8 (extremely good – excellent) according to wool scale (ISO 105-  B02)

•  Special surface strengthening (dirt-resistant and erasable)

•  No bleeding in accordance with DIN ISO 16245:2012

This quality corresponds to the technological basis of the following standards:

ISO 9706:2010

Information and Documentation – Paper for written or printed documents – Requirements for permanency

 ISO 16245:2012

Information and documentation – Boxes, file covers and other enclosures, made from cellulosic materials, for storage of paper and parchment documents

ANSI/NISO Z.39.48:1992

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