Help your child understand the science of water filtration and desalination with this tabletop kit for learning how we can clean and reuse dirty water. The kit includes active carbon, rocks, sand, filter paper and more, and even uses solar power in some of the water-purification experiments.Note: This kit is not intended as a filtering device for drinking water. Style Name:Toysmith Clean Water Science Lab Kit. Style Number: 5590484. Available in stores.