What I have taken from reading the report is that there are trace amounts of bad minerals, nutrients, and even heavy metals like copper in all salt mixes. The tests are for comparison of these different levels. The tests also give you a good idea of which salts have a good calcium, alkalenity, magnesium level etc. Othere things to look at are silica, phosphate, nitite and nitrate levels which can all be detremental for various reasons. You may notice that there are many similaities in results for most of the salt mixes out there. Also the test makes it clear that just because a salt is popular doesn't mean that it is the best one to go with. My concluding thought after a close analysis is that no matter which salt you go with it is important to monitor your levels and adjust accordingly.