  Copper sulfate crystal.
An individual crystal of copper sulfate from a bottle of root killer (designed to poured down drains to get rid of roots growing into drain lines).
Source: Farm & Fleet
Contributor: Theodore Gray
Acquired: 13 January, 2010
Text Updated: 13 January, 2010
Price: $0.01
Size: 0.25"
Composition: CuSO4
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