Outcomes Summary

In preparation to meet the cosmetology state board requirements, students need to learn about what makes the pH of a substance vary between acidic and alkaline.

1. They assemble their own pH meters using Arduinos, and learn how to calibrate with standardized solutions.

2. Then they use the software we provide to visualize the output of the meters. Now they can see how relative density of H/OH ions; pH scale, and substance examples all correlate in real time:

3. Based on these results, and their knowledge of different hair products, students come up with product that will be health for hair care and produce a sample. Finally, they use the scientific method to hypothesize the pH of their hair products and test them using the pH sensor.