Alkalinity is important because it protects
or buffers against rapid pH changes.
'Alkalinity and pH are related to each other in ways that are obvious, and in other ways that are subtle. The idea that alkalinity is separate from pH (which is by ‘coincidence’ called either acid or alkaline) is a myth though pH and alkalinity are two different measurable parameters of water. Even though the pH can be very high we find that un-mineralized water has little ability to neutralize acid in the stomach to initiate the production of bicarbonate in the bloodstream.'Alkalinity is a measure of the buffering capacity of
water – its ability to resist sudden changes in pH.
pH is a measure of how acidic or basic water is.
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