[STEAM Toy DIY Handmade] Handmade Water Purification Device Children's Science Experiment Set

Product content: Total weight 400g. 15.5cmX6cmX20.5cm. Includes 1 bag of granite, 1 bag of porcelain sand, 1 bag of activated carbon, 1 bag of quartz sand, 1 bag of baking soda, 1 bag of potassium alum, 6 filter papers, 2 sponges, 1 filter device, 1 instruction manual

This experimental device can purify turbid water into clear and clean water. The water is filtered through layers of filter paper using different materials such as granite, porcelain sand, activated carbon, quartz sand, etc., turning from turbid to transparent. During the experiment, children can observe the filtration process of different substances, feel the origin of clean water, and experience unexpected surprises. It should be noted that the filtered water is only for demonstration and is not for drinking.