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EXPERIMENT KIT WATER 1: DRINKING WATER / WASTE WATER

Code d'article: 431802

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With the materials of Box 1 u.a. following attempts possible:

" Determine which types of soil stop or pass water

" find out that a sand and gravel filter retains solid components, while dissolved substances (oil, salt, detergents) can not be removed from the water by filtration

" recognize the influence of polluted water on germinating plants

" understand the stages of mechanical water purification

" Discover the principle of communicating vessels and transfer their applications