Drinking-Water Guidelines - Chapter 14: Treatment ...

ADI has developed a new leaching method for Diatomaceous Earth, which will produce high-grade 7N 99.99999 pure amorphous silica without high temperature smelting. Expensive high heating or smelting of the naturally occurring amorphous DE silica mineral is not required to produce a pure 99.99999 amorphous silica product. ................
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