Posted by ASENERG on May 09, 2000 at 00:21:45:
In Reply to: Water Purification Question! posted by Boilerman1 on May 08, 2000 at 20:54:41:
: What material is not used as a filtering medium in water purification?
: D.) Salt
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Comments: : : What material is not used as a filtering medium in water purification? : : D.) Salt