Indicator

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Indicator may refer to:

Biology[edit]

Chemistry[edit]

  • pH indicator, A weak acid or weak base whose colour is different from that of its conjugate base (Eng L Jay)
  • Redox indicator, a chemical detector for redox titrations
  • Complexometric indicator, a chemical detector for metal ions in complexometric titrations
  • Zeta potential, a property of interfaces in fluids for Zeta potential titration
  • Humidity indicator card, a card impregnated with chemicals that change colour when a particular humidity is exceeded

Economics[edit]

Mathematics, engineering, and industry[edit]

Other uses[edit]