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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
finishing.com - Pine Beach, New Jersey
(Ted is available for instant or longterm help)

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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