Check the listing for details. Phenolphthalein Indicator 1% Solution 500 mL Bottle plus 1 (2 oz) Dropper Bottle. Condition: New. Listed at 24.00 USD. Phenolphthalein Indicator 1% Solution 500 mL (1.06 pint) Bottle plus 1 (2 oz) Dropper Bottle 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. Ready to use Indicator Solution that keeps indefinitely (no shelf-life limitations)Tough, Refillable, Easy to Handle Amber Glass Dropper BottleSuggestions for Handling and Use are included in the packageFREE Dispenser Cap Included for Refilling Dropper BottleNON-FLAMMABLE Alcohol-Free Formulation for Greater Safety