LabChem® Phenolphthalein 1% IN 95% Etoh

LabChem® PHENOLPHTHALEIN 1% IN 95% ETOH is a ready-to-use solution of phenolphthalein at 1% in 95% ethanol, a classic acid-base indicator that transitions from colorless in acid to pink in base over an approximate pH range of 8.2 to 10.0. Providing the indicator pre-dissolved at a consistent concentration removes the need for in-house preparation and weighing of the solid dye. Its ready-mixed formulation supports consistent color response from batch to batch.

It is one of the most widely used indicators in acid-base titrations, including alkalinity and total acidity determination in water testing and general titrimetric analysis. Its consistent, ready-mixed concentration supports reproducible endpoint detection across testing sessions. This reagent should be handled, stored, and used according to established laboratory safety procedures and the manufacturer's instructions.

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