Check the listing for details. Phenolphthalein Indicator 1% Solution 2 Bottles 500 mL plus 1 Dropper Bottle. Condition: New. Listed at 31.00 USD. Phenolphthalein Indicator 1% Solution 2 Bottles 500 mL (1.06 pint) each 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. Tough, Refillable, Easy to Handle Amber Glass Bottle Suggestions for Handling and Use are Included in the PackageNON-FLAMMABLE Alcohol-Free Formulation for Greater SafetyFREE Dispenser Cap Included for Refilling Dropper BottleKeeps Indefinitely NO Shelf-Life Limitations