Product Short Description: Lab Reagent Resulting colour is deep pink in alkaline medium. Product Description: Phenolphthalein indicator solution manufacturer and supplier. Lab Reagent chemicals Resulting colour is deep pink in alkaline medium.

Product Short Description: PHENOLPHTHALEIN INDICATOR Product Description: Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. ... It is a weak acid, which can lose H+ ions in solution.