AR22284PP15

43-410

Archival Methods

This pack of 22 x 28" Warm White 4-Ply 100% Museum Board from Archival Methods contains 15 boards that are 1/16" thick. The board is designed for matting, mounting and preservation of fine prints, precious documents, as well as for traditional and digital photography. The 4-ply thickness is ideal for window mats and mat backing, creates a separation between artwork and glazing, and provides a flat, supportive backing. The boards are acid- and lignin-free and use alkaline or neutral sizing. No brightening agents are used and no yellow cast is present. All boards are buffered with calcium carbonate to ensure that a polluted environment won't cause paper's pH value to decrease with age.None Made from 100% Cotton fiber pulp (99% Alpha Cellulose). Does not contain any post consumer waste recycled pulp. Paper is free of metal particles, waxes, plasticizers and residual bleach peroxide. Sulfur content is less than 0.0008% reducible sulfur. Iron content does not exceed 150 ppm and copper does not exceed 6 ppm. No optical brightening agents are used in the pulpNone Alkaline sizing is used for both internal and external sizing. No alum is used in the manufacturing processNone Calcium carbonate buffered with 2 to 3% alkaline reserveNone Acid-freeNone Light-fast and non-bleeding color dyesNone Won't degrade or harm mounted matted artworkNone Board passes the PAT (Photographic Activity Test) ISO 14523 (formerly ANSI IT9.16)None Lignin content is tested by TAPPI 236 cm-85 and has a Kappa number of less than fiveNone Single ply sheets are laminated together using all natural starch adhesive