Water Testing Lab

During this lab I learned that although many precise measures can be taken to see how pure your water is, nothing can completely make our water pure. Although tests can tell us if there is a substance in it or not, it can never be positive, at least not from the tests we've learned about so far. I also have discovered that it is important to check through all the steps of a lab carefully, one mistake and it can change all the results. Even though careful precautions can be taken, there are always going to be unavoidable mistakes.