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Personal Narrative: My Experience Of Chemical Testing On Water

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Today I met with Mr. Schwinnen and Mrs. Laughbaum at the high school in order to perform chemical testing on my water samples. Mr. Schwinnen taught me how to use the YSI 9300 Photometer to find the phosphorus and nitrogen levels. For both tests, I filled a test tube with my water sample of a site, and then I put a crushed tablet that goes with whichever test I was doing (nitrogen or phosphorus). After that dissolved, I put the a second crushed tablet into the sample and let that sit for 15 minutes. The two tablets are labeled so I know when to use each one. While the test tube was sitting, the water would change colors. Once the 15 minutes were up, I put the sample into the YSI 9300 Photometer so it could give me the nitrogen and phosphorus levels. I repeated these steps for all 5 sites with the nitrogen tablets and phosphorus tablets. After I wrote down all my results, Mr. Schwinnen showed me the HI 93703 and I found the turbidity. All I had to do was shake all my water samples and put them into test tubes. These test tubes then went into …show more content…

Most importantly, I learned how to use the YSI 9300 Photometer and HI 93703. They were pretty easy to figure out except that I had to put a control sample into the machine first. So, for the YSI 9300 Photometer the original water sample must be put in before the one with all the tablets dissolved. Also for the HI 93703, a test tube of distilled water would be put in before the water samples. I also forgot to put a turbidity spot on my data sheet so I am going to have to revise the data sheet again. Lastly I need to figure out what all of these chemical aspects mean concerning stream health. This means I am going to do a lot of research moving forward. I am planning on reading a lot of research papers by other scientists and looking on reliable environmental science websites. After today, I learned what to expect next time I do chemical

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