Laundering Weir: Sedimention basin overflow weir.
LC 50 / Lethal Concentration: Median level concentration, a standard measure of toxicity.
laundering weir Sedimentation basin overflow weir. A plate with V-notches along the top to assure a uniform exit or effluent velocity in order to avoid short circuiting.
 See also: Emission, Treatment, Environment, Environmental, Exposure
  
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