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  1. refields

    Measuring pH

    Hello, Can somebody recommend a test strip method for measuring pH in low alkalinity (15-80 mg/L as CaCO3) potable water? The pH test strips we are using have a note that they tend to read low in water with Total Alkalinity < 80. Thanks much, Robert
  2. refields

    Hello Mechanical Engineers, I am

    Hello Mechanical Engineers, I am working on a venting system and attempting to calculate head losses through the vent piping due to the friction of air flow. I don't have any issues with getting the Darcy Friction factor (using Churchill equations). My issue is that the Darcy-Weisbach...
  3. refields

    NYC Graywater irrigation feasibility study

    I am conducting a feasibility study for the beneficial reuse of extracted urban groundwater for the irrigation of turf grass with some deciduous trees. The approximate coverage area to be irrigated is between 100,000 and 200,000 sf. Though the extracted groundwater is from inland Brooklyn, NY...

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