I remade the solutions using the right concentrations of Mg today. The results we great! What a sense of relief. All the prepared concentrations fell with 1% of their intended concentration. So we decided to step it up one notch. Professor Andresen suggested that I made more solutions in ppb But this time I should make two sets: One with only Mg diluted with water and then the other one with the complete components ( tris and Nacl). I made the solutions and stored them in the fridge so we could test them on Monday and analyze the results.