Heavy duty media bottles can be used for storage as well as mixing and sampling. Includes linerless, one-piece autoclavable polypropylene plug seal cap with drip free pouring rings. Glass bead indicates full capacity line on 100mL through 2L size. Bottles have permanent white enamel graduations and marking spots. Options include clear glass, coated glass, and low actinic (red colored) media bottles for light-sensitive applications.