chemical indicators

Chemical indicators are substances used to show whether a specific chemical or physical change has occurred, often through a visible color change. They are commonly employed in processes like sterilization, dyeing, or pH testing to confirm that conditions such as temperature, acidity, or chemical reactions have been achieved. For example, in sterilization, a chemical indicator might change color to confirm that an object has been properly sterilized, ensuring safety and effectiveness. These indicators provide a simple, reliable way to verify that critical processes meet required standards without needing complex testing.