DescriptionThree-neck round-bottom flask, Pyrex 5000ml, from science classroom of Stevens - Hoboken Academy, Hoboken, probably in use circa 1945-1975. Clear borosilicate glass, spherical, circa 8" in diameter x 11" overall height; 4 side creases; marked in white at center with brand and capacity. Three parallel flanged necks at top. Object is seen sitting on fixture for photographic purposes; not part of the object. Also called round-bottomed flask, Erlenmeyer bulb and reaction vessel. It was used in chemistry lab or biology education.