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08-30-2012

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06-13-2014 4:54 AM

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  • Posted in thread: RO Membrane Question on 11-26-2013 at 08:34 AM
    You're not likely going to find a "max silica number" as the solubility varies with pH and
    temperature. If you've been using the same membranes for 5 years, it doesn't look like silica
    is an issue to ...

  • Posted in thread: RO Membrane Question on 11-26-2013 at 08:19 AM
    Although silica can foul a membrane, it's not where I'd focus. A more common concern is
    hardness. Just as hardness forms scale on your plumbing fixures, it will scale the inside of a
    membrane. This is...

  • Posted in thread: RO Membrane Question on 11-26-2013 at 12:14 AM
    Even quick connect fittings eventually leak - especially if the tubing is routes so there is
    lateral stress. The orings in the fittings need to be replaced periodically (think years).

  • Posted in thread: RO Membrane Question on 11-26-2013 at 12:13 AM
    Use a 5 micron, or better yet a 1 micron sediment filter. IF your carbon tank is working
    correctly, you won't need an additional carbon prefilter.Sanitize your system every other
    filter change or abou...

  • Posted in thread: Off taste from RO water on 10-19-2013 at 11:04 AM
    I would have thought a buildup in the 5u or 1u would just result in a reduced
    throughput?ThanksLAs prefilters clog and rob pressure from the RO membrane, the membrane
    performance (how well it cleans t...

  • Posted in thread: Off taste from RO water on 10-19-2013 at 11:02 AM
    The most common cause of off flavor/odor in RO water is a post-membrane "taste and odor" filter
    that is past its useful life and needs to be replaced. They are very inexpensive and easy to
    replace.If ...

  • Posted in thread: RO water and TDS meter on 03-04-2013 at 12:39 PM
    Good point - as the meter error spec is expressed as a % of the reading.

  • Posted in thread: RO water and TDS meter on 03-04-2013 at 10:36 AM
    Since we are most interested in assessing the quality of a RO source, wouldn't a good TDS test
    solution be distilled water? 342 ppm TDS is OK for assessing feed water, but I don't think that
    is our ma...

  • Posted in thread: RO water and TDS meter on 03-03-2013 at 09:34 PM
    Hmm. That is a counterfit knockoff TDS meter, made to look like the TDS3 from HM Digital. I
    don't know anything about its quality. But assuming it is fine, you can use some calibration
    solution like t...

  • Posted in thread: RO water and TDS meter on 03-03-2013 at 05:30 PM
    Yep. We look at chlorine very differently than chloramine however. Membrane tolerance is only
    1000 ppm-h.

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