Definition of "acid-free" []

• Alkaline or neutral; not acidic. (adjective)
• Without using acid. (adjective)

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• "The original art is India ink on 11″x17″ Strathmore archival acid-free bristol paper."
• "The artist†™ s process of creating the image of Batman and Robin on the cover of ALL-STAR BATMAN AND ROBIN #9 is chronicled here on an acid-free, double-matted authentic DC Comics artboard, perfect for framing."
• "Even acid-free paper can only hold up for so long in the sulfurous suburbs of Hell."