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BS ISO 18915:2000:2001 Edition

BS ISO 18915:2000:2001 Edition

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Imaging materials. Methods for the evaluation of the effectiveness of chemical conversion of silver images against oxidation

Published By Publication Date Number of Pages
BSI 2001 26
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1.1 This International Standard describes methods for evaluating the effectiveness of chemical converĀ­sion treatments intended to increase the resistance of wet-processed silver images to oxidation. The treatment may be applied as part of the original proĀ­cessing, 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 outĀ­side 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 “hydroĀ­gen 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.

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BS ISO 18915:2000
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