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1) The document discusses a study on the effect of citric acid administration on water hardness levels in Sukomulyo village, Gresik, East Java using the complexometric method. 2) The study found that citric acid at concentrations of 4%, 5%, and 6% were most effective in reducing water hardness levels, with average reductions of 2011.9 ppm, 1897.2 ppm, and 1760.8 ppm respectively. 3) Statistical analysis found a significant decrease in water hardness levels in wells in Sukomulyo village after citric acid
- Author
- Dwi Agustini
- Language
- EN