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Description of BS ISO 18915:2000 20011.1 This International Standard describes methods for evaluating the effectiveness of chemical converÂsion treatments intended to increase the resistance of wet-processed silver images to oxidation. The treatment may be applied as part of the original proÂcessing, or it may be a post-processing treatment. This International Standard does not recommend general or specific treatments for silver images. Likewise, treatment temperature, times and replenishment rates are outÂside the scope of this International Standard. Factors to be considered in a stabilizing treatment are discussed in informative annex B. Two test methods are described: the "dichromate bleach test" and the "hydroÂgen peroxide incubation test" (see [7] in the bibliography). The significance of each is discussed in informative annex C. 1.2 This International Standard is applicable to silver-gelatin images coated on supports of either plastic, paper or glass.
About BSIBSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. |
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