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Terry LeBeau

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  • DE vs. PerliteThis chart shows the efficacy of DE filtration compared with perlite for microspheres ranging from 1 to 5 microns. These microspheres are meant to approximate crypto oocysts in size.Conditions: Perfect filter — Tubular | Particle retention test results Filter aid comparison — 1.5 Darcy permeability Results averaged from 10 filter runs, 20 samples per run @ 1.5 gpm/sq. ft.
    Tech Talk

    by Terry LeBeau

    In the past 40 to 50 years, regenerative diatomaceous earth filters have become the norm for maximum filtration efficacy, replacing the older style of open-top vacuum DE filters

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