Scientific Explorer Crime Catchers Spy Science Kit is a safe and fun educational science kit that will have you following clues and gathering evidence by matching fingerprints, testing powders and liquids and decoding secret messages like a crime scene investigator. Follow the instruction booklet to solve the 2 exciting mysteries with 8 different activities and learn some really cool science about how real crime labs work. Compare evidence, ask questions and make observations using different senses. Let's solve some mysteries! Adult supervision required. Recommended for children 8 years of age and older. Includes 2-baking soda (0.25oz.), citric acid (0.25oz.), 2-flour (0.25oz.), 12 suspect cards, 6 ph strips, 3 coffee strip filters, 3 cups, 2 markers, 2 plastic bags, decoder glasses, graduated cylinder with cap, painting, rubber band, shoe print, test tube with cap and activity guide.