What we need to filter (and how it will be done):
- Bacteria:
- Boiling (this will be the first step in filtering the water so as to not leave behind bacteria on the filter explained below)
- We will use a desk lamp and magnifying glasses as a source of heat. They will shine on an angel food cake baker with saran wrap over it to allow the water to condense:
- Metal Flakes and Biological
- Our after-boiling filtration system will take place in a two-liter empty upside-down Gatorade bottle that has its bottom cut off (for unfiltered water to be poured into and for the filtered water to come out through the small opening).
- a layer of kitty litter (a household item with the same consistency as sand).
- below the kitty litter, a layer of chemically untreated cotton balls solidly hand-molded together (to imitate a wool sweater)
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