1. the important of water
... Water Total hardness from EDTA test with softener. Total hardness from EDTA test without softener. Tap in a dorm (East Halls) 80 ppm 140 ppm Tap from House in Pittsburgh, PA 60 ppm 120 ppm Tap from hotel room in Panama City, FL 280 ppm 320 ppm The Baking soda agent was more effective than the resin beads. In conclusion, our hypothesis ... ...
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