Published April 11, 2019 19:03 Are your carbonating bottles recyclable? Yes they are! Our bottles are made of PET Type 1 plastic, which is easily recycled. Related articles Where can I recycle my CO2 cylinders if I no longer can use them? Why are the cylinders so expensive? It would be cheaper to buy cans/bottles? What is the max PSI on your bottles? If I want to carbonate my water and store it for later, how long can I expect it to store before going flat? What items are compatible with my sparkling water maker?