How Do You Make Blue Bottles At Home?

Small concentrations of cobalt (0.025 to 0.1%) yield blue glass The best results are achieved when using glass containing potash. Very small amounts can be used for decolorizing. 2 to 3% of copper oxide produces a turquoise color. How do you make glass blue? Small concentrations of cobalt (0.025 to 0.1%) yield blue glass The … Read more