Specification AgeRangeDescription : Adult Brand : Archival Methods BulletPoint1 : Pages are permanently bound for durability BulletPoint2 : Protect and clearly display contents BulletPoint3 : Front cover pocket to display labels BulletPoint4 : Title pages and pictures to personalise your display book BulletPoint5 : Wide Vision - Consistent experience, timed on/off, automatic playback, no manual , fully automatic playback. Color : Black ExternallyAssignedProductIdentifier : 8694123022234 ExternallyAssignedProductIdentifier1 : 0813903027322 ExternallyAssignedProductIdentifier2 : 813903027322 ItemName : Archival Methods 5x7 Conservation Mat Board, 25 Packs, Pearl White ItemPackageDimensions_Height : 3 inches ItemPackageDimensions_Length : 15 inches ItemPackageDimensions_Width : 12 inches ItemPackageQuantity : 1 ItemTypeKeyword : photo-presentation-portfolios Manufacturer : Archival Methods MetalType : other ModelNumber : Mat Board NumberOfItems : 1 NumberOfPockets : 20 PartNumber : 97-257 Pattern : Camouflage ProductDescription : Conservation board uses purified wood fiber pulp alpha-cellulose and is therefore more economical to manufacture than museum board cotton, yet carries with it the same stable and long-lasting properties. Purified wood pulp art paper has a long history of being safe to use with paper, photographs, and its high quality, conservation board is acid resistant and lignin free, and incorporates alkaline or neutral. All boards are buffered with calcium carbonate. This ensures protection against the harmful effects of acid migration in the work from a matte contaminated environment which can cause the pH of the board to decrease (become more acidic) with age. No optical brightening agents are used in the manufacture of your conservation table. Conservation of wood fiber pulp alpha cellulose uses table, double layer/purified 30 PT. (approximately 4 1/32")/60 pt. Alkaline sizes (approximately 1/16") used for both internal and external. No alum is used in the manufacturing process, pH 9 with alkaline reserve calcium carbonate 2-3%, +/-0.5, color dyes are light and do not fade Acid free does not degrade and cause damage to mounting artwork nor matte content is tested by tappi 236cm-85 together laminated and has a Kappa number of less than five single-ply sheets are using all natural starch adhesive board passes the PAT test (photographic activity) ISO 1891 ProductSiteLaunchDate : 2018-04-25T04:53:29.565Z Size : A2 StreetDate : 2022-10-03T00:00:01Z Style : Modern SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 43190000 WarrantyDescription : no warranty