Purify water or cook an egg using foiled cardboard and the sun</br>Construction supplies and complete instructions included</br>Learn the science of cleaning and reusing dirty water by conducting interesting water purification experiments</br>Clean Water Science kit contains a plastic filter system?? active carbon?? sand?? rock?? filter paper and instructions</br>Just add a water glass; this personal desalination kit demonstrates the scientific way to extract salt from sea water</br></br>Product Description</br></br>Purify water or cook an egg using foiled cardboard and the power of the sun with our 4M Solar Science Kit. Construction suppl