For science my daughter did a science project which was to review pH as well as whether a liquid is an acid or a base. These pH Dips are super fast and give you results that you need that helped her distinguish whether or not her liquid that she was checking was either an acid or a base. They helped display the complex chemistry with a beautiful colorful matrix. Each test strip indicate the pH of a liquid or gel, even solutions with light color. The box contained 100 test strips, which gave her ample time and amount in case she messed up the strip by accident. I liked that each of four colored pads on the end of the strip reliably change color depending upon the pH of the liquid. Comparing to the color chart to determine the pH balance is simple and easy.
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I received this product in exchange for my honest and unbiased.