Learn about acids, bases, and pH indicators with our red cabbage juice kit. A pH indicator is a chemical that behaves differently depending on the pH level it is exposed to. Red cabbage juice is a natural pH indicator that changes color from red to purple to yellow-green as the pH of a solution increases. Test out different substances to determine if they are acidic or basic, and see if you can make all six colors found on the color chart! Kit Includes: 20 g Red cabbage powder Scoop Pipette Plastic beaker Red cabbage juice color chart DOT Info: Non-regulated