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Wheaton* Lab 45's Bottles, Pour Rings and Screw Caps
USP Type I borosilicate glass bottles have a 45 mm screw-thread finish, a writing area and approximate volume graduations. Wide mouth eliminates fluid surge during pouring. Sloping shoulders facilitate easy cleaning and complete drainage. Polypropylene pour ring eliminates drips. White polypropylene screw cap with sealing ring and polypropylene pour ring. Autoclavable.