I had some beautiful dabs, but they tasted like sulfur, so I attempted to remediate with copper scrubbers. I winterized my dabs in everclear. When the copper scrubbers turned black, I would remove them and wash in citric acid, then rinse with water and dry in vacuum oven. Continue that process until scrubbers stopped turning black. The problem is that the copper turned my beautiful amber dabs black. I’ve tried using Activated Charcoal Decolorizing T1, then filtering through a silica 60A slurry in a buchner funnel, but my winterized solution is still black. The silica seems to be removing the charcoal, but black color still comes through.
How can I remove this black color and get my dabs looking amber again?