EISCO PTC Test Strips & Control Test Strips Experiment Set Includes 2 Vials - Test Papers - Genetic Taste Testing These taste testing strips are used to determine whether a person is a super taster . The control strip is included to make sure the experiment can be run with scientific accuracy. - Set of 2 vials - PTC and Control. Comes with enough strips for 100 experiments (more if you cut the strips in half) - PTC (phenylthiocarbamide) only has a taste to 7 out of 10 people - Control strip is included to make sure experiments can be run with scientific accuracy - Perfect for a demonstration of genetics and heredity - Each strip measures 6mm x 48mm - - - 3.4 x 2 x 0.2 inches; 0.63 Ounces