Corning® Pyrex® graduated cylinders are calibrated "to contain" and are equipped with a 24/40 Standard Taper outer joint. These cylinders are particularly useful as distilling receivers. Single metric graduations are in durable white enamel. Supplied without stoppers. For hollow glass Standard Taper stoppers, see Cat.No. 1-7570N-24. Nonsterile. Reusable.