This new experiment is with Iron sulfate (Chemical formulae FeSO4.7H2O). This Work is based on the general instruction document from the Inner Garden group. To me this is a new area that I need to explore. The first steps are the processes of the purifications of the green crystals formed after evaporation. I started this work on January 12th 2015. On this gallery you can see the development of the purification process of this substance.
An interesting note. The emerald green liquid has a very nice smell. Fresh and sweet very subtle.