Made of polypropylene. Features a dip-stick well for small volume testing and a pour spout for dripless pouring. Translucent, with a stable square base. Can be autoclaved. Also useful as a drosophila stock bottle. Graduated from 0 to 170ml and from 0 to 6 oz. Snap cap supplied separately.- Caps For B352, Plastic, 2000/cs 14-21 Days