MicroChamber Paper is a very thin, nearly translucent interleaving ACID-FREE paper that contains dispersed molecular traps that remove and neutralize acids, pollutants, and the harmful by-products of deterioration. Insert one or two sheets in your newspaper, and know that you are effectively practicing preventative conservation for your collection. It also eliminates odors such as smoke, mold, and mildew. HOW TO USE: Place an appropriate sized acid-free sheet of MicroChamber inside or behind your paper collectible or photo. The sheet does not have to cover the item 100% as acids will migrate towards the MicroChamber paper and be trapped. The MicroChamber paper will work indefinitely absorbing acid and neutralizing odors.