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Decrease pH, increase dispersity. The yellow color should be due to Iron nanoparticles.
13Â¥2015-04-25 06:01:30
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Particles are too small. Because of Brownia motion, they can not be attracted to the bottom of beaker completely by magnet.
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10Â¥: Originally posted by zijinmining at 2015-04-24 21:44:12
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