This antique Pyrex glass chemistry bottle was once used to hold Potassium Iodide, which is a salt of stable iodine (most of the stable iodine in our bodies comes from the food we eat - KI is stable iodine in a medicine form). A beautiful and unique piece with simple and elegant red typography and stitched-like border treatment. Bottle is in good unrestored vintage condition and measures 7.75"h and 3.25" in diameter. Comes with original glass stopper.