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Residual Silver Test

$12.95
SKU:
03-0170 .
Rating:
5 Stars
Quantity:

Product Description

Formulary's Residual Silver Test is used to determine If any silver ions remain in a print or on a film strip after fixing. When the silver test solution is applied to photographic material the sulfide ions in the solution react with any residual silver ions in the material forming a yellow stain indicating the fixing process is inadequate. The chemical in the kit makes a stock solution which is diluted 1:9 to make more than 1 liter of working solution. The stock solution shelf life is 3 months, although the working solution lasts only 1 week.

 

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  1. Works as promised 5 Star Review

    Posted by on 3rd Feb 2023

    This is not a test I would do all the time, but I'm setting up a new darkroom and I want to make sure my processing is still working right.
    A residual silver test and a residual hypo test are good ways to make sure you are fixing long enough and washing long enough to achieve permanence.




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