For robust storage and transport, choose the Wide-Mouth Boston Round Bottle-HDPE-500ml. This high-density polyethylene (HDPE) bottle with a polypropylene (PP) closure guarantees a leakproof seal. Conforming to USP Class VI standards and low in trace elements, it offers excellent chemical resistance to most acids, bases, and alcohols. Ideal for storing, packaging, and shipping dry materials and liquids, and suitable for freezer storage down to -100°C.