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Eductors and Acid Copper Pitting

Have eductors lessened the amount of pitting in acid copper plating solutions?

Ron Robinson
Plating chemical supplier - Fort Wayne Indiana US
December 16, 2010

Hi, Ron.

It sounds like you are asking us to call an eductor salesperson a liar :-)

Agitation is very valuable in acid copper plating, and eductors can be a good method to impart that agitation. Please try to post your actual situation. Thanks!

Regards,

Ted Mooney, P.E.
Striving to live Aloha
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey
December 20, 2010

Eductors are an excellent addition to many plating tanks, but they are not completely idiot proof in their employment.

James Watts
- Navarre, Florida
December 23, 2010

Eductors are good but certainly not a must for acidic copper.

Pitting is rarely a problem in acidic copper. Good housekeeping keeps the pitting away.

Mostly pitting in acidic copper is a result of poor filtering.

If you are facing pitting problem, filter 1 liter in lab with a good filter paper (not more than 1 micron) and take a good look at the paper. If there are particles on it, its a proof that the filtration needs improvement

Sara Michaeli
Tel-Aviv-Yafo, Israel
December 30, 2010

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