Flint glass bottle used for flushing eyes with boric acid or other solutions. Ground glass stopper assures sanitary protection and guards against evaporation. Bulb: 1 oz. (30 ml), Bottle: 8 oz. (250 ml)Flint glass bottle used for flushing eyes with boric acid or other solutions. Ground glass stopper assures sanitary protection and guards against evaporation. Bulb: 1 oz. (30 ml), Bottle: 8 oz. (250 ml)