http://www.h2o2-4u.com/grades.html
http://www.fmcchemicals.com/Industrial/V2/TechDataSheets/0,1882,1087,00.html HTH, sol Dr. David W. Kenney wrote:
Are you using over the counter peroxide. It is said that it contains some heavy metals...are you worried. Wouldn't food grade be safer?
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