Wednesday 20 November 2019

Calgary .. on the Brink of Doing the Wrong Thing...


Less than 1% of city water is swallowed. In populations where .82ppm F ave in H2O, only 0.011ppm got in saliva. Toothpaste is cheap & has 1000-1500ppm (+more) = 97000-137000 X more than saliva #yyccc
7:07 PM · Nov 6, 2019Twitter Web App

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