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An alphabetical listing of General terms and items. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Vacuum Distillation   Distillation that occurs at a pressure somewhat below atmospheric pressure. Lowering the pressure also lowers the boiling point of water, thus conserving energy by requiring less heat to bring about distillation. Validation   Determination upon testing that a representative sample of a water treatment product/model has meet the requirements of a specific standard. Vapor   The gaseous form of any substance whose usual form is liquid or solid. Visible particles of moisture suspended in air, such as mist or fog. Viable   capable of living independently and being reproductive. Viable Water Treatment Process   A water or wastewater treatment process capable of accomplishing the desired water quality. Virus   A parasitic infectious microbe, composed almost entirely of protein and nucleic acids, which can cause disease(s) in humans. Viruses can reproduce only within living cells. They are 0.004 to 0.1 micron in size, about 100 times smaller than bacteria.  VOCs   Volatile organic chemicals. Volatile   Capable of becoming vapor at relatively low temperatures. Volatile Organic Chemicals (VOCs)   Synthetic organic chemicals that turn into vapor at relatively low temperatures. Back to top