The pH level of most drinks are not low enough to eat metal, roughly a level of 2 depending on the metal and reactions: http://www.sheltondentistry.com/patient-

The pH level of most drinks are not low enough to eat metal, roughly a level of 2 depending on the metal and reactions: http://www.sheltondentistry.com/patient-information/ph-values-common-drinks/ http://www.sheltondentistry.com/patient-information/ph-value... Citric Acid will eat metal, which is why liquids like orange and lime juice are not stored in metal containers.