Check the listing for details. Phenolphthalein Indicator 1% Solution 950 mL (1 Quart) Bottle Plus 1 Dropper. Condition: New. Listed at 33.00 USD. Phenolphthalein Indicator 1% Solution 950 mL (1 Quart) Bottle Plus 1 Dropper Bottle (2 oz) containing 50 ml of Solution This Phenolphthalein Indicator solution is manufactured in our USA laboratory by experienced chemists using strict quality control procedures. It is commonly used with acid and base titrations as well a "neutralization" indicator for determining when excess base such as sodium hydroxide or potassium hydroxide is present. Our formulation does NOT contain alcohol but uses safer propylene glycol thus avoiding the flammability hazard. Convenient Waterproof Labels; NO Shelf-Life Limitations Tough, Refillable, Easy-to-Handle Amber Glass Dropper Bottle Suggestions for Handling and Use are Included in the Package FREE Dispenser Cap included for Refilling Dropper Bottle NON-FLAMMABLE Alcohol-Free Formulation for Greater Safety