Science Experiment Help!?

I am doing an experiment to test the concentration of electrolytes in OJ, Propel, Powerade, Gatorade, and Tap water. But I need to write something called the Review of Literature. I need introductory and Conclusion Paragraph. If anybody could type one up, THANK YOU SO MUCH! I swear I will owe you one forever! If you don't want to please give me some points to get started on. Thank you!