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  1. W

    Taylor FAS/DPD Reads Low ...

    ... compared to Hach DPD and Taylor OTO. R-0871 is ~ 3-months old; it started all at once. Not shaking the reagent enough?
  2. W

    Drain DE filter?

    Would it be beneficial to drain the dirty-water from the pressure-side of a PLD70? Dynamic pressure is 4-psig, so media replacement is not warranted. Thanks!