Working solution
A processing solution used at the strength needed to process a film or printing paper.
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Working Solution
This is the formula or chemical diluted (or not) for direct use. D-76 diluted 1:1 is a common working solution for film development. Dektol 1:2 is common for paper development.
Working solution
A chemical solution diluted to the correct strength for use.
Working solution is a liquid chemical that has been mixed and diluted for use.
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This is frequently done when two or more stock solutions must be combined to make the working solution.
This developer contained, per liter of working solution, 4.5 g of metol, 5.0 g of sodium sulfite, 12.5 g of sodium carbonate, and 0.75 g of potassium bromide.
When the pyro working solution is mixed together, it will immediately proceed through color changes from gray-green to pale amber. If there is no color change, something is wrong! At the end of the development time save the developer.
 See also: Film, Photograph, Temperature, Developer, Print
  
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