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It should be in acid solution. PH=4
you can try if there is perticipation
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Originally posted by cobaltoxid at 2010-08-25 00:56:26:
It should be in acid solution. PH=4
you can try if there is perticipation

much thanks
let me try
8Â¥2010-08-25 12:22:58
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I met the same problem(perticipation).how to explain it?
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