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  2. Grease pencil - Wikipedia

    en.wikipedia.org/wiki/Grease_pencil

    Two grease pencils Historical diplomatic usage. The grease pencil, a wax writing tool also known as a wax pencil, china marker, or chinagraph pencil (especially in the United Kingdom), is a writing implement made of hardened colored wax and is useful for marking on hard, glossy non-porous surfaces.

  3. Permanent marker - Wikipedia

    en.wikipedia.org/wiki/Permanent_marker

    Most brands of "OLFA" marker wipe off easily with acetone-free nail polish remover, the kind containing ethyl acetate, a relatively non-toxic organic solvent. A permanent marker can also be removed by drawing over it with a dry erase marker on non-porous surfaces such as a whiteboard , [ 3 ] as dry erase markers also contain a non-polar solvent.

  4. Acid-free paper - Wikipedia

    en.wikipedia.org/wiki/Acid-free_paper

    The company Hercules Incorporated developed the first alkaline sizing in the 1950s that made acid-free paper possible. [10] Despite the advances in paper making and the identification of and concern around the brittle book problem, it took decades before the adoption of ANSI NISO Standard Z39.48-1984 - Permanence of Paper for Publications and Documents in Libraries in 1984.

  5. United States Permanent Paper Law - Wikipedia

    en.wikipedia.org/wiki/United_States_Permanent...

    The U.S. Permanent Paper Law, or P.L. 101-423, is a joint resolution calling for the use of acid-free paper for federal records, books, and "publications of enduring value." [1] It was signed into law by President George H.W. Bush in October 1990. [2]

  6. Invisible ink - Wikipedia

    en.wikipedia.org/wiki/Invisible_ink

    Security marker pens or UV markers with fluorescent ink that glows when illuminated with a UV light is often used to invisibly mark valuable household items in case of burglary. There are specialty security maker pens formulated for writing on non-porous surfaces such as glass, plastic, metal, etc.

  7. Color Wonder - Wikipedia

    en.wikipedia.org/wiki/Color_Wonder

    Color Wonder is a product made by Crayola, primarily intended for use by younger children, in which the special clear-ink marker only appears on the Color Wonder paper. Originally made with markers and paper, Color Wonder has also made specialty products including paints, etc. The Color Wonder products debuted in 1993.

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