Calcium and magnesium levels in the water
Method:
40 ml of four comparative filter media (SumiBall, Charcoal, Bincho Charcoal and Bamboo Charcoal) was mixed with 200 ml of distilled water and left to stand for 20 hours. Each solution was then filtered, and the filtered liquid analysed using an ICP emission spectroscope.
Calcium and Magnesium Levels in Filtered Water
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