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The initial cost is higher than a cartridge; however, the cost is not exorbitant and the electrolytic plating unit should be considered as the primary means for recovering silver from fixers and bleach fixers. Navy imaging facilities are not charged for silver recovery equipment. Procedures for obtaining silver recovery equipment are located in the Defense Reutilization and placed in the silver bearing solution and an electric current is passed between them, causing almost pure recovery capacity of the unit is determined by the direct current density and the size of the cathodes; that is, (amperes) in relation to the surface area of the cathode. cathode. Without this system, the current density would become too high for the amount of silver present in the solution near the cathode and result in the formation of silver sulfide. This silver sulfide decreases the efficiency of the unit. others may have several circular disks mounted on a shaft or use a rotating cylinder (fig. AI-3). Cathodes are made of metal and there are two types: flexible and nonflexible. The flexibility of the cathode makes it easy to remove the silver flake. Those cathodes that are not flexible can be tapped lightly on a flat surface to remove Advanced Photography Course |
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