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White spots afflict green passivation after a few days

After green passivation we have found very tiny white spots on the fastener after a few days. What is it and why does it happen. How to prevent it from happening.

green passivation has 8 Microns of zinc plating and made in 80ml/Ltr concentrate in DM Water.

Raghav Mohindroo
Owner of plating plant - New Delhi, INDIA
August 26, 2008

Hi, Raghav. Are you very sure that the parts are perfectly dry?

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
(Ted is available for instant or longterm help)

August 27, 2008

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