real

• Types of pH indicators

  • Universal indicator
  • Litmus paper
• Universal indicator


  • Exists in two forms: liquid solution or as paper
  • Liquid indicator will change the value
• Litmus paper


  • Cannot tell you the strength of acid or alkaline
  • Can only show you if it's acid or alkaline
• There are two types of forms of universal indicators: universal indicator solution and universal indicator paper
• Universal indicator


  Changes the colour
• Litmus paper


  Tells you whether a solution is acid or alkaline