Indicators used in titration show well marked changes of color in certain intervals of pH. Most of these indicators are organic dyeand are of synthetic origin.In this review importance of Fruits Flavonoids as a Natural Acid Base PH Indicator are described.Today synthetic indicators are the choice of acid-base titrations. But due to environmental pollution, availability and cost, the search for natural compounds as an acid-base indicator was started. The present work highlights the use of the Anthocyanins flavonoids present in the most of fruits used as acid-base titrations. This natural indicator is easy to extract as well as easily available. Titration shows sharp color change at the equivalence point. Therefore, this natural indicator is found to be a very useful, economical, simple and accurate for acid base titration.
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