![]() ![]() ![]() Determination of original color, surface, or character of paper it may be impossible to return an object uniformly to selected “original color”, resulting in the balance of color being thrown off.Nature of the image/object (historical, archival, fine art) historical relevance of the stain under consideration.(Often a stain does not need to be entirely eliminated to return a sense of visual integrity to the object.)Īppropriateness of Bleaching for the Object Effectiveness of prior washing, alkaline baths, solvent treatment, enzyme treatment, etc.Extent to which the object can be subjected to washing, alkaline baths, solvent treatment, enzyme treatment, etc for example, some stains such as foxing and mat burns can be lessened visually with alkaline solutions, like calcium hydroxide or ammonium hydroxide, which solubilize components of discoloration or swell fibers to allow greater diffusion through washing.(Note: Since the potential for damage varies with the bleach, alternate treatment method and object under consideration, it is important to evaluate each combination separately.) 4.1 Philosophy Concerning the Current Usage of Bleaching as a Treatment for Paperįactors to Consider Įxtent to Which the Same Effect can be Achieved with Another Method Believed to be Safer.3.2 Non-Aqueous Treatments - Organic Solvents.2.9 Washing Supports, Moisture Barriers, etc.2.2 Anti-chlors (Also called Bleach Eliminators). ![]() 1.5 Effects of Bleach on Paper Support and Media.1.2 Appropriateness of Bleaching for the Object.1.1 Extent to Which the Same Effect can be Achieved with Another Method Believed to be Safer. ![]()
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