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1% Phenolphthalein solution for measuring acidity in home brewing and wine making acid test kits. Phenolphthalein is often used in titrations as an indicator for measuring the acidity of a solution. Please follow the instructions provided with an acidity measuring kit on how to use this properly.
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Form: Liquid Concentration: 1% Volume: 1/2oz (14.8mL) Inactive Ingredients: 50% Water, 49% Isopropyl Alcohol