Heritage Archival Paper

A versatile acid free paper which is used by bookbinders, conservators, artists, and fine printers. Tub sizing provides Heritage Woodfree with good fold and surface strength, necessary for quality printing and publishing. 120gsm. Sheet size 840 x 600mm (short grain).

Specifications:

• Colours: White or Ivory
• Refined alpha-cellulose fibre
  
• Free from optical brightening agents enclosures
• Internally sized: Alkyl Ketene Dimer Tub sized with pure non-ionic farina starch
• Acid-free and Lignin-free (ASTM D1030/ISO 302)
• pH7.5 to 9.5 (unbuffered 6.5 to 8.5)
• BS2924 ISO 6588:1981
• Lightfast and bleed proof pigments
• min 5 BlueWool Scale test (BS1006:97 & TAPPI T475)
• Neutral AKD internal sizing, External Tub sized/starch
• Buffered (average 3%) calcium carbonate (ISO 9706:2004)
• High percentage Long Kraft fibres
• Alpha Cellulose above 87%
• Reducible Sulphur less than 0.8 parts per million (0.0008%) (TAPPI T406)
• No added O.B.A’s
• Passes Silver Tarnish Test (ASTM D2043)
• Passes P. A.T. (Photographic Activity Test) (ISO 1891