What is another word for universal indicator?
Pronunciation: [jˌuːnɪvˈɜːsə͡l ˈɪndɪkˌe͡ɪtə] (IPA) 
Universal indicator is a chemical compound that has the ability to change its color based on the acidity or alkalinity of the solution it is added to. Synonyms for this term include pH indicator and acid-base indicator because it measures the pH level of a substance. Another synonym is pH paper, which is used to measure the pH level in a solution by performing a simple color change test. Litmus paper, on the other hand, indicates if a substance is an acid or a base. There are also a variety of synthetic indicators available that serve a similar purpose, including methyl orange and phenolphthalein. Ultimately, all of these terms refer to a substance that helps to determine the acidity or alkalinity of a solution.
