Imagineering, Inc. | https://www.pcbnet.com/blog/what-is-the-pcb-fabrication-process/
. Electroplating, Stripping, and Etching With the conductive pattern and drilled holes exposed, the panel is placed into a copper plating bath containing sulfuric acid and copper sulfate
Surface Mount Technology Association (SMTA) | https://www.smta.org/chapters/chapters_detail.cfm?chapter_id=38
. Typical ions accounted for have included chloride, bromide, nitrate, sulfate, weak-organic acid (WOA), sodium and ammonium. Environmental and other concerns have driven the industry to adopt myriad flux formulations, which has created a need to further differentiate weak-organic acids beyond what a typical IC system can provide
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