Hello, technetters,

Quite some of board shops sucessfully installed on line copper etchant
recycle. The technology is actually very mature.  The next stop for on line
recycle  is Tin stripper.

Any ideas or do you run tin stripper recycle on line successfully?  Please
share your experience with us.  We are using nitric acid based stripper and
think how to take Tin out of the spent solution.  We are using
precipitation tank treatment.  Dialysis is one method but seems to be too
expensive for just recovering the inpensive nitric acid.

Please share your case which is feasible and cost effective and good for
environment.

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