The substances used in the experiment
1. Wastewater
2. Solution (K2SO4Al2 alum (SO4) 324H2O)
1, experimental equipment. A series of experiments of precipitation a batch
2 beaker size. 1 000 ml, the 3 leaf
3. Glass rods people 3 A
4. Stopwatch 3 set
5. Plastic jug big 1 leaf
6.Cylinder size 40 ml 1 A
.
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