This week was all about brainstorming how to control for the independent variable since. Initially, distilled water seemed to be a good control but when I ran it through the filtration system and analyzed the sample, I saw a significant amount of microfibers and other unknown pieces of material under the dissection scope. As a result, I decided to try and filter a large quantity of distilled water several times in hope that I would see the quantity of microfibers and particles decrease after each filtration. After filtering the distilled water sample three times, I can still see the presence of microfibers and unknown pieces of material. I am going to try and filter the sample a few more times and see if I can at least filter out all the microfibers.
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