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Old 05-31-2018, 11:13 AM
Dan Vanantwerp
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I just bought Coloured Glasses from Weyl. Good price on Amazon...$50 in paperback. Volf is at $200 currently.

I looked at the price of erbium when Jordan described his pink color test and it was pretty $$$. Must work well if you would rather use it to remove color.

The mechanism of action for the decolorizers (as described by CMOG) is oxidation of tramp metals. It wouldn't make much sense for me to add oxidation agents into a glass that I just made reducing...like your dog fight analogy. The yellow color is just going to have to be a side product. I'll add less tin next time.

Do you think it is the tin or something else in Cristalica that is turning yellow?
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