Pool Grade Diatomaceous Earth CAS 68855‑54‑9 is dedicated replacement filter media for diatomaceous earth swimming pool filters. The porous rigid particle structure builds uniform pre‑coat filter bed on filter grids, efficiently removing fine sediment, dust, algae spores and other micro contaminants from circulating pool water. It maintains stable water flow and reduces backwash frequency. Low heavy‑metal impurities, safe for residential and public swimming pool water circulation.

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