water purification (filter) working model science project - diy - simple and easy | DIY pandit

water purification (filter) working model science project - diy - simple and easy | DIY pandit #waterpurifier #waterpurification #waterfilter #workingmodel #workingproject #scienceproject #scienceexhibition #diy #diypandit #simple #easy #inspireaward #scienceprojects #inspireawardproject Water purification explanation : 1st stage - water is passed through big gravel or stones where it filters the dirt particles and waste materials 2nd stage - water is passed through small gravel or stones where it further filters the dirt particles which are small 3rd stage - water is passed through sand where it further small dirt particles are filtered 4th stage - final stage where water is cleaned using cotton or tissue paper where dirt and waste materials are completely removed using this filtration mechanism