Your state may vary, but in Washington any solution of copper sulfate greater than 1% must be disposed of as hazardous waste. Karen Smith, CSMM Chemistry Stockroom Manager Whitman College 345 Boyer Ave. Walla Walla, WA 99362 509 527-5272 On Aug 19, 2010, at 7:12 AM, Anthony Santoro wrote: > Hello, > > I am curious as to how others may be handling dilute solutions of > cupric sulfate. Do you drain dispose if it is a very low > concentration? At what concentration would you consider managing > this solution as hazardous waste? > > Regards, > Anthony > > >
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