To do this, take a glass and weight 100 gram of aluminum potassium sulfate and 12 grams of chromium potassium sulfate in it. Adding chrome alum will make the crystals violet.
Then, pour 400 ml of a very hot water into the glass and stir until all the alum is dissolved.
After it’s all dissolved, leave this glass for a few days to let the crystals form at the bottom. A day later pour the alum solution into another container.
Then, pour 400 ml of a very hot water into the glass and stir until all the alum is dissolved.
After it’s all dissolved, leave this glass for a few days to let the crystals form at the bottom. A day later pour the alum solution into another container.
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