Check the listing for details. Bookkeeper Archival Spray 5.3 oz (Same Shipping Any Qty). Condition: New. Listed at 59.50 USD. To view our combined ship rates add all items to your shopping cart. Use Bookkeeper½ Deacidification Spray to safely and effectively neutralize acids in paper and increase the life of your books, documents, manuscripts, clippings, maps, posters and more. The spray's magnesium oxide neutralizes acid leaving an alkaline reserve permanently fixed in the cellulose fibers. Unlike some other deacidification sprays, Bookkeeper½r won't clog and it works on all materials without negative impact on print or colors. Books & records treated with Bookkeeper½ lasts 3 to 5 times longer than untreated material, allowing them to be used by historians and researchers for centuries into the future. 5.29oz refillable pre-charged spray bottle Safely and effectively neutralizes acids in paper Virtually odorless and dries in minutes Won't negatively affect print or colors Nontoxic, non-flammable, and environmentally safe Contains no atmosphere damaging CFCs nor Freon Always test in an inconspicuous spot before treating item Same trusted ingredients as Archival Mist Please note: This item can not ship Expedited or International, ground only