Very early in the development process we wanted to develop a glass bottle to work with the Spärkel system. Unfortunately, the risk of glass shattering during and after the carbonation process would require significant shielding for safety reasons and introduces an injury risk that we could not accept.
The good news is that we found and have used a new advanced material named Tritan™. Tritan™ has the look and feel of glass without any safety concerns. Tritan™ is also dishwasher safe and BPA-free. Finally, using an electron microscope we have seen no evidence of micro-cracking even after many thousands of uses. This durability has enabled us to not put an expiry date on our bottles.