Review on Discover Your Genetic Taste Profile With Phenylthiourea (PTC) Test Paper - 100 Paper Strips Vial by Alton Walton

If you're looking for these, you already know what they are for. Used for student engagement in a genetics unit and these worked great. Student's loved it, and the results were as expected. I was able to actually cut them in half to spread the stock out. One caveat - be careful to separate them out or you'll end up handing out two at a time. They stick together a bit.