Week 12 and 13 - The last chemical tests and getting ready for showroom

In week 12 we conducted the last chemical tests. As I mentioned previously, we stumbled into some problems with the test methods and therefore we did some calculations and re-did the tests with new dilutions and standard curves. The test results differed somewhat from the earlier results, however, we can now make conclusions from the tests. We also took microscopic pictures of the gravel, which was a bit frustrating, since the school's camera's battery was empty. But luckily batteries can be re-loaded and after that we managed to get some really cool pictures that i will post on the blog for you to see.

In week 13 we started reporting a little but focused more on the poster since the showroom is coming up in week 16.