From the table to reduce the turbidity of the water by using alum. By Tess Jardine at 100 NTU turbidity
was observed in the first selected pH. The proper pH of 7.5 and lower turbidity left. 2:35
in 2nd Select the pH The proper pH of 8, and reduce the turbidity. 1.87
in the third Select the pH The proper pH of 8, and can reduce the turbidity left. 2.63
when the average pH of the proper reaction alum is best able to reduce turbidity and pH of 7.83 to 2.28 NTU, with a mean of 2.5 units of color.
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