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1/25/2018 7:38:29 AM
Posted: 8/4/2002 2:07:38 PM EST
Any body know where to get Powdered Manganese Dioxide? Thanks- Gump
Link Posted: 8/25/2002 9:43:20 PM EST
I don't know what concentration of Phosphoric acid is needed but it is sold as a humidifier cleaner in stores like wally world and such.

dave
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