Heavy-duty and autoclavable, these polypropylene bottles are shaped to make the most efficient use of your bench space. The neck is offset for easier filling and pouring, and the rounded octagonal shape provides increased rigidity when the carboy is full. The built-in handle is comfortable for carrying and end-sealed to prevent contamination. The leakproof stopcock features a removable tube fitting for added convenience. Graduations are molded on the front of the products for easy reading.