For use with Pre-metallized Acid Dyes on silk and wool to level these dyes by making them strike more slowly than with vinegar or citric acid.
Use 1 Tablespoon of Ammonium Sulfate per lb. of dry fabric for immersion dyeing. Vinegar or citric acid can be added at the end to completely exhaust the dye.
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I love ammonium sulfate! I just add a tablespoon to the dye bath before I add the fiber then gradually raise the temperature of the dye solutionfiber to boiling. This technique really helps to level the tricky pre-metalized acid dyes. No more blotchy colors on my wool!
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