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>Learn about your climate while tracking weather changes and conducting experiments on the greenhouse effect</br>Completed station measures 8.5"5"; Just add your own bottle to create a functional weather station</br>Turn a simple toy motor into a generator; The generator could be used as an awesome energy torch</br></br>Product Description</br></br>Help to save the environment. Learn the science of cleaning and reusing dirty water by conducting interesting water purification experiments. Build your own water filtration and desalination plant at your table top; disinfect water with solar power and more. It's a cool water science experimental kit. Includes filter sections?? plugs and base?? active carbon?? sand?? gravel?? filter paper?? funnel-shaped collector?? plastic cup?? soft wax?? fishing line?? and detailed instructions with fun facts. While the Weather Station kit features a wind vane?? an anemometer?? a thermometer and a rain gauge.