BS ISO 18915:2000
Current
The latest, up-to-date edition.
Imaging materials. Methods for the evaluation of the effectiveness of chemical conversion of silver images against oxidation
Hardcopy , PDF
English
15-03-2001
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Dichromate bleach test
5 Hydrogen peroxide incubation test
Annex A (informative) Numbering system
for related International Standards
Annex B (informative) Variable in silver
stabilizing treatments
Annex C (informative) Significance of
the test methods
Annex D (informative) Correction of
density value
Bibliography
Figure 1 - Drawing of collar and baffles
Figure 2 - Desiccator jar components
Figure 3 - Assembled desiccator jar
This standard specifies the methods for evaluating the effectiveness of chemical conversion treatments intended to increase the resistance of wet-processed silver images to oxidation and the treatment may be applied as a part of the original processing or it may be post processing treatment
| Committee |
CPW/42
|
| DevelopmentNote |
Supersedes BS ISO 12206. (02/2001) Reviewed and confirmed by BSI, August 2015. (07/2015)
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
1.1 This International Standard describes methods for evaluating the effectiveness of chemical conversion treatments intended to increase the resistance of wet-processed silver images to oxidation. The treatment may be applied as part of the original processing, 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 outside the scope of this International Standard. Factors to be considered in a stabilizing treatment are discussed in informative annexB.
Two test methods are described: the \'dichromate bleach test\' and the \'hydrogen peroxide incubation test\' (see [7] in the bibliography). The significance of each is discussed in informative annexC.
1.2 This International Standard is applicable to silver-gelatin images coated on supports of either plastic, paper or glass.
| Standards | Relationship |
| ISO 18915:2000 | Identical |
| ISO 5-4:2009 | Photography and graphic technology — Density measurements — Part 4: Geometric conditions for reflection density |
| ISO 5-3:2009 | Photography and graphic technology — Density measurements — Part 3: Spectral conditions |
| ISO 5-2:2009 | Photography and graphic technology — Density measurements — Part 2: Geometric conditions for transmittance density |
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