Experiment of purification of water using chlorine
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Procedure:
Use the first gallon bottle of collected water as a control.
To the second bottle add 1 drop of NaOCl (bleach).
To the third bottle add 2 drops of NaOCl.
To the fourth bottle add 4 drops. Let them sit for 30 minutes.
Make up some microscope slides with water from each bottle and observe.
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