I got hold of one of these water test kits from Sensafe, with their brewing water test set-up. Link below to my hands-on review. It was pretty cool how easy it was to use. I did have some glitches/crashes with the App on my Android phone, but once I stuck to the basics of the water test, I had success. Anyway, if you've seen one of these and you're curious how it worked out, you can check out my detailed review write-up below. If there's anything not in there that you're curious about, reply to this thread.
http://www.homebrewfinds.com/2018/1...afe-exact-smart-brew-idip-water-test-kit.html
http://www.homebrewfinds.com/2018/1...afe-exact-smart-brew-idip-water-test-kit.html