Summa canisters should be shipped back to AAC using the same boxes they arrived in unless they contain dangerous levels of flammable or dangerous gases. In this case, contact your shipper or DOT for shipping instructions. Tedlar bags should be shipped in a box or sturdy container to avoid punctures. If shipping by air, Tedlar bags should be filled only to ~2/3 to avoid bursting. DNPH cartridges and solutions, BHA solutions and most other solutions should be shipped cold (blue ice) by next day air. Glass vials and bottles need to be properly wrapped in packing material to avoid breakage. Please Contact Us for specific shipping instructions or if you have any doubt on how to ship your samples prior to shipping.