Year 2009-10 9th grade BIOLOGY MIDTERM STUDY GUIDE -Rao

Diatomaceous Earth (D.E.) Filters can be metal, fiberglass or plastic just as all other filters. Water is pushed through a D.E. filter, just as any other filter. The pump pushes the water into the filter past a series of 8 D.E. filter grids. These grids have a plastic skeleton and are … ................
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