Green Science - Clean Water Science This unique kit is packed full of interesting water purification experiments. Learn the science of cleaning and reusing dirty water and help save the environment. Build your own water filtration and desalination plant at your table top; disinfect water with solar power and more. Contents: - 4 x filtering sections and plugs - Round filter base - 3 x bags of active carbon, sand, and gravel - 3 x filter papers and a funnel-shaped collector - Small plastic cup with soft wax - Fishing line and a transparent tube - 2 x transparent caps, silver reflector card and metal washers - Instruction manual Specifications: - Dimensions: 22cm x 17cm x 6cm - Weight: 0.4kg - Warranty: 6 Months (Manufacture Defect) What's in the box 1x clean water science set