White (4401) Mountboard Sheets

Solidcore mountboards fully comply with Fine Art Trade Guild Conservation Level (Level 2).

• Made from high-quality, bleached alpha cellulose in 1, 2, 3, or 4 ply, each being the same. The board is lignin-free.
• Only natural pigments are used which are fade and bleed resistant. On the Blue Wool Scale it measures a reading of 5 minimum.
• Water-soluble extracts are minimal i.e. chloride below 0.05%, sulphate below 0.25%.
• Buffered with calcium carbonate, minimum 3-5% in weight.
• Passes the Silver Tarnish Test and Photographic Activity Test making it suitable for mounting precious photographs.
• Neutral pH-buffered adhesive with plasticiser-free calcium carbonate, thus eliminating the issue of acids forming within the adhesive layers.
• Accelerated ageing test: TAPPI T.509 SU68
  • Unaged – pH9.4
  • 100 years – pH7.5
  • 200 years – pH7.5
  • 300 years – pH7.5

Specification