Before you start silver recovery from film and papers, you need to know the amount of silver available. The process to estimate amount of silver available from your photographic films and papers involves the following steps:
1. You will need to estimate how much film and paper that you process at your photographic processing facility over a known period of time.
2. If you calculate the available silver to compare to the amount reported to you by your silver refining company, you will want to use an amount that represents your average processing over a specific period of time.
3. If you calculate the available silver to determine the size of silver recovery equipment that you will need, make sure that you use a peak processing amount to ensure that the equipment will always meet your needs.
4. You will need to know the amount of silver that is present in the photographic films and papers. See (Silver In Photography ).
5. For color films and papers, use the total amount of silver present to estimate the amount that is potentially recoverable. For black and white films and papers, you will need to estimate the percentage of exposure. The higher the level of exposure (dark images), the lower the amount of silver that is removed from the film or paper.
6. Once you have estimated the area of the films and papers that you process and the amount of silver that is available, you can calculate the total amount of silver.
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