https://blogs.mercola.com:443/sites/vitalvotes/archive/2019/02/21/10-things-you-need-to-know-about-fluoride-_1420_-plus-a-new-device-to-test-for-it.aspxResearchers in London, England, have created a device to test your water for fluoride that is so sensitive it can detect the substance even in low concentrations in a few drops of water. It’s portable, easy to use and considerably cheaper than currentenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)