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Thread: Cleaning and sanitizing the Reverse Osmosis system

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    Never Knows Best gill_za's Avatar
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    Brolloks, Av8tor1,

    Thank you for your replies. I have purchased two packets of the USwater sanitization mix and will also clean the system with bleach before or after.

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    I'm late to the party, but I second the 10% bleach solution (exposure 30 min or longer). If you're going to replace your filters anyway, there shouldn't be too many places for the bleach to hang out.

    I'd add: good enough for the USDA for the treatment of waste water and effluent containing foreign microbes.
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    RO units don't like hot water so be careful about using anything warmer than tap water.
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    Never Knows Best gill_za's Avatar
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    Well ladies and gentlemen DO clean your units once in a while. I thought mine looked OK until it was taken apart. FILTHY!!!! Washed the thing and Nuked it with the sanitization solution from USWaters and 10% Bleach. The only problem is the persistent bleach smell. Those who have used bleach before, do you have any ideas on how to get rid of it without having to do a 1000 cycles of rinsing the unit? I am also googling the solution, so if something comes interesting comes up I'll post it here.

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    try putting an airstone in the rinse tank/bucket/whatever and let it run and soak overnight
    Last edited by Av8tor1; 04-18-2016 at 10:48 AM.

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    Never Knows Best gill_za's Avatar
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    I must have misunderstood you, what do you mean by rinse bucket?

    Internet suggests using either Sodium Bicarbonate - which makes no sense to me, its not as if baking soda will react with traces of hypochloride or any derivative products produced during sanitization.

    Another suggestion is to use vinegar = aslo makes no sense since it has a chance of producing chlorine.

    I am leaning towards using 3% peroxide solution (will need a lot of it...), maybe dilute it to 1% and let the solution sit in the unit for an hour or so.

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    Quote Originally Posted by gill_za View Post
    I must have misunderstood you, what do you mean by rinse bucket?

    Internet suggests using either Sodium Bicarbonate - which makes no sense to me, its not as if baking soda will react with traces of hypochloride or any derivative products produced during sanitization.

    Another suggestion is to use vinegar = aslo makes no sense since it has a chance of producing chlorine.

    I am leaning towards using 3% peroxide solution (will need a lot of it...), maybe dilute it to 1% and let the solution sit in the unit for an hour or so.
    Whatever container you are rinsing the parts in

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    Never Knows Best gill_za's Avatar
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    Quote Originally Posted by Av8tor1 View Post
    Whatever container you are rinsing the parts in
    Got it. Actually it seems I did not explain myself correctly. I took the unit apart and washed it with soap and removed all the grime I could get. Then it was assembled (no filters/membrane) and a premade bucket with ~10% bleach was recycled through the unit. So all water then had an odor.

    However, peroxide seems to have done the trick. I released the pressure, dumped the water from the unit and tank and cycled bunch of diluted peroxide (1.5%), filled the tank and let it stay for 1hr. Odor is pretty much gone it seems!!!
    Last edited by gill_za; 04-19-2016 at 04:57 AM.

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