Paper etchings and lithographs can now be treated for acid burn in rare documents and watercolors can also be treated as well.
Paper if not 100% rag content can change chemically and develop an acid content through out the support. Acid burn in is the most widely known problem. This tints the paper a light brownish tone speckled with an acid burn in. The acid burn in leaves brownish specks through out the entire sheet of the support. The acid migrates directly in to the paper support from the front and behind touching the document. Prior to 1978 museum rag boards were not readily available to the general public for use in framing protection of the original document or print.
Treatment 1: Remove the old acidic mats and backing boards that are in direct contact with the subject. Apply a chemical treatment to the back of the sheet to have the acid reverse it self to a neutral PH of 7 to 7.8.
Treatment 2: Upon completion the paper is the same color as when you started. The browning can be lifted from the paper using our special treatment. This can be done with paper and Ukyoe prints.
Treatment 3:We use mild bleach that takes many applications to obtain the desired color bringing the paper back as close to the original tone.
Deacidification is fairly inexpensive to do and can make paper supports last years longer. Museum rag mat boards are available today and help preserve the originals in the appropriate custom frames.
Let The Museum Shop help preserve your rare documents, watercolors, etchings, lithographs, and rare maps.