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Control system for copper-ion control in wet etching

Can anyone give me information about companies dealing with control-system for copper- ions in wet-etching? I need to know when to recycle my etching -solution. Best regards goran

goran frennesson
- SWEDEN
1999

Hello Goran,

In the printed circuit industry the copper concentration in ammoniacal etchants is controlled by specific gravity. You should contact a supplier of this chemistry in Sweden. The supplier may also be a great way to recycle your etch.

Regards,

Fred Mueller, CEF
- Royersford, Pennsylvania
1999

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