MilliporeSigma and Triumvirate support and encourage the use of recyclable shipping materials, including the packaging that came with your replacement cartridges. If for some reason the packaging that came with your new cartridges is not appropriate, we encourage you to repurpose other suitable containers to save cost and promote sustainable practices. If you are still unable to find a suitable container, Triumvirate has offered access to containers that can be reused and/or be recycled as part of the ech2o® program. These containers do add cost to acquire and ship, and are therefore, a less sustainable solution. The costs reflect the actual cost to acquire and ship the containers only. There are no added fees, except for the costs to return the fully-loaded containers.
Of course, you are absolutely free to purchase your own containers from any vendor or source you choose, so long as they are suitable for the weight and size of the cartridges you intend to ship, and will not leak.