Difference between revisions of "Chemical Etchants"
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== Disposal procedures == | == Disposal procedures == | ||
| − | * [http://www.kepro.com/fmc4.htm Kepro Circuit Systems] Removal of Copper and Persulfate from | + | * [http://www.kepro.com/fmc4.htm Kepro Circuit Systems] Removal of Copper and Persulfate from Spent Sodium Persulfate Etchant by Precipitation |
| − | Spent Sodium Persulfate Etchant by Precipitation | ||
== External Links == | == External Links == | ||
* [http://www.k9spud.com/wiki/PCB:Etchants Ferric Chloride vs. Ammonium Persulfate] and other etching chemicals. | * [http://www.k9spud.com/wiki/PCB:Etchants Ferric Chloride vs. Ammonium Persulfate] and other etching chemicals. | ||
Revision as of 21:14, 19 June 2006
This article is a stub. You can help Open Circuits by expanding it.Contents
Ferric Chloride
Ammonium Persulfate
Sodium Persulfate
More environmentally friendly than ferric chloride. Can monitor the etching as initially clear new etchant solution turns blue from the copper ions.
Disposal procedures
- Kepro Circuit Systems Removal of Copper and Persulfate from Spent Sodium Persulfate Etchant by Precipitation
External Links
- Ferric Chloride vs. Ammonium Persulfate and other etching chemicals.
