Crystal Cell 13
Some very old cells and new formula with excellent results. Magnesium, Copper (not treated), Activated Carbon, Alum, Rochelle Salts, White Sand (from construction). All ingredients are same quantity. Cooked in the cell with Magnesium rollup with paper inside. Cooked until melted while adding water until rock solid. No sodium silicate on this one neither the copper oxide layer. Next cells I will try different combinations of formulas. Cooking is dangerous and smells really bad. Disclaimer: Only do that with great care and in a ventilated area since fumes are poison.