iSi 10-Pack Soda Chargers, Gold For use with iSi soda siphons, this box of 10 soda chargers lets you carbonate your own soda water Cuts down on salt and impurities; provides a better way to enjoy carbonated beverages without plastic bottles Perfectly designed and filled to work with iSi siphons; backed by 100-percent quality control testing Each charger is good for 1 application Product Built to North American Electrical Standards