What is the black scaling on the inside of my bottle of working strength Kodak Rapid Selenium Toner?
What is the black scaling on the inside of my bottle of working strength Kodak Rapid Selenium Toner?
Silver.Originally Posted by RexWH
Silver selenide, more likely - since selenium toner is supposed to react with silver to form silver selenide.
Pass the selenium toner through a coffee filter to remove the black precipitant.
Working strength selenium toner can be replenished with fresh concentrate and reused over a long period of time.
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