The picture above shows Aaron, holding two samples of water I just tested. I use a calorimeter every day and test levels of iron, chlorine and manganese in the water. I take samples of water and then add different chemicals depending on what I'm looking for. If the water has iron in it, it turn orange. If there is chlorine, it turns pink and manganese turns purple. I then take readings to get more precise results. My job is to keep us in compliance every week. I can use my tests to determine what areas are having trouble and how to fix them. It's a fun job.
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