Archival Backing Boards

An economically priced backing board in natural white/grey-blue and in grey-blue/white/grey-blue, specially developed for conservation-quality picture framing and mounting. The board is free of optical brightening agents and has passed the Photographic Activity Test (PAT) in accordance with ISO 18916.

Specifications:

An economically priced backing board in natural white/grey-blue and in
grey-blue/white7grey-blue, specially developed for conservation-quality picture
framing and mounting. The board is free of optical brightening agents and has
passed the Photographic Activity Test (PAT) in accordance with ISO 18916.
Sizes ex-stock: 101 x 141 cm

Material characteristics: • 100% bleached cellulose
• without the usage of recycling fibres
• free of wooden fibres
• Kappa level < 5 = 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)
• top surface sizing: Cobb60 in accordance with ISO 535 < 25
• without optical brightening agents
• light-fastness approx. 7 – 8 (= extremely good) in accordance with the wool
scale (EN ISO 105-B02)
• no bleeding in accordance with DIN ISO 16245:2012
• special surface strengthening (dirt-resistant and erasable)
• Photographic Activity Test (PAT) passed in accordance with ISO
18916:2007
• dispersion glue free of solvents and plasticizers (softening agents)
• pH approx. 7.0
• Photographic Activity Test (PAT) passed in accordance with ISO
18916:2007.