Patents Assigned to Illinois State Water Survey of the Department of Registration and Education
  • Apparatus for measuring the presence of a weak acid or a weak base in a liquid
    Patent number: 3950137
    Abstract: A method and apparatus for measuring the presence of a weak acid or weak base in a liquid by withdrawing a sample from the liquid; reacting the sample with an excess amount of strong acid or strong base reagent; measuring the conductivity of the reagent-treated sample and comparing the measured conductivity to a standard value.
    Type: Grant
    Filed: October 11, 1974
    Date of Patent: April 13, 1976
    Assignee: Illinois State Water Survey of the Department of Registration and Education
    Inventors: Thurston E. Larson, Russell W. Lane, Chester H. Neff