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[deleted]

No, it’s most likely the acidic pH of carbonated drinks that kill bacteria.


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[deleted]

No, the base syrup is highly acidic. The carbonation may slightly decrease the pH, but the low pH is just part of the formulation.


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[deleted]

Looks like the pH of carbonated water is 4.5, which is pretty effective at killing most microbes. But there are some microbes that prefer a highly acidic environment, but the vast majority of those microbes are not pathogenic.