I tried this lab myself and was amazed at the pH indicator outcome. It also allows for other property identification as suggested in this lesson. I would caution the students of the chemicals used in the chemical products and use lab goggles. This will also help them realize how much safer it is in using the Green product. I begin reading labels when I introduce the periodic table with rice krispy bars. The web site for them is great. You can download the DVD, music and lyrics. Also learn Snap, Crackle, and Pop in seven languages. The bars are made from three ingredients in the home recipe. We focus on the marshmallow made from sugar. Then we discuss the chemical formula for sugar: C, H, and O. This lesson builds on how to read those ingredients on product labels.