how to make water purifier-filter working model for inspire award science project using waste bottles howtofunda
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Short Information :

A four-layer water filter using a plastic bottle can be made by cutting the bottle in half and adding four layers of filtration material. The layers can be made from a variety of materials, depending on the specific contaminants that you want to remove from the water.

Here is an example of how you could make a four-layer water filter using a plastic bottle:

Cut the bottle in half, so that you have a bottom half and a top half.

For the first layer, you could use a material like gravel or pebbles, which will help to remove larger particles from the water.

For the second layer, you could use activated carbon, which will help to remove chemicals, toxins, and odors from the water.

For the third layer, you could use sand, which will help to remove smaller particles from the water.

For the fourth and final layer, you could use a material like cotton or a filter paper, which will help to remove even smaller particles from the water.

To use the filter, you would simply pour the water into the top half of the bottle, and let it filter through the layers until it reaches the bottom half. The filtered water can then be collected in the bottom half of the bottle.

It's important to note that this type of filter will not remove viruses or bacteria from the water, so it should not be used in situations where the water is potentially contaminated with these pathogens.

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