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Peroxide Disinfection

Peroxide Disinfection

Peroxide Disinfection

(OP)
Does H2O2 really work very well as a disinfectant in DI water systems without a UV light source or some catalyst.  I have read that it isn't a good disinfectant.  We currently put about 0.05% H2O2 in our DI water system to keep it free of bacteria.

RE: Peroxide Disinfection

Nope.  H2O2 at concentrations this low is just an oxygen source.  People actually add H2O2 to groundwater to promote aerobic bacterial growth.   At 0.05% it's not toxic to much.  If you add UV to the system, you'll make some *OH radicals which do have some disinfective effect, but the UV will do the job of disinfection without the H2O2 just fine.

RE: Peroxide Disinfection

Peroxide is a very good desinfectant , but not for your type of application.

I have had an cupforming equipment supplier who used a high concentration peroxide bath to decontaminate the plastic foil that was used for the cupforming , prior being filled with a milk product and sealed.  

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