(PPFA CLASS I)
Peterboro Museum Matboards are 100% cotton, museum-grade boards manufactured from purified alpha-cellulose sourced from cotton linters. Naturally acid-free and lignin-free, they deliver exceptional long-term stability for the highest level of archival protection.
KEY FACTS
1. Core and Composition
- 100% virgin cotton fibre
- Naturally acid-free and lignin-free
- Buffered with up to 5% calcium carbonate reserve
- Available unbuffered for protein-sensitive media
2. Chemical Purity
- Less than 0.0008% reducible sulphur (TAPPI T 406)
- Less than 150 ppm iron and 6 ppm copper (TAPPI T 266)
- No optical brightening agents
- Neutral sizing, neutral pH adhesives
3. Testing and Standards
- pH at manufacture: 7.5–9.5 (buffered); 7.0–7.5 (unbuffered)
- Passes ISO 14523-1999 PAT and ISO 18916 Photographic Activity Test
- Meets PPFA conservation standards
4. Colours and Formats
- 10 neutral colors
- Standard sizes: 32″ × 40″, 40″ × 60″
- Select references available in 1, 2, 4, and 8-ply
- Jumbo sizes available in select references: 48″ × 72″, 48″ × 96″, 60″ × 104″
At Peterboro Matboards, we are committed to excellence, with every product in our line meeting or exceeding the standards established by the Professional Picture Framers Association (PPFA) for its respective category. The PPFA Comparative Matboard Standards set the industry’s most rigorous benchmarks for matboard quality and preservation, ensuring that materials meet strict criteria for protection and longevity.