To solve this you need clue cards A-I and test tubes 1-9. If you do not have all these items yet, find another puzzle to solve.

Work through the clues to put the test tubes in order. Clue cards C, E and F are a good place to start.

The correct order is purple, white, black, pink, yellow, orange, green, blue and red which gives the code "497863521". Type the answer in the box above to proceed.