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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
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey
August 27, 2008

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