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Thread: Sulfates why so bad?

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    Pool-creetin's Avatar
    Join Date
    Mar 2010

    Sulfates why so bad?

    I see dry acid is discouraged here for its sulfate content. Why is that? Does not sulfate and chloride ions cancel each other out at the end point?
    Just trying to get a better understanding.
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    benavidescj's Avatar
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    Apr 2010
    Fleming Island, FL

    Re: Sulfates why so bad?

    Here is a good article on why you should not.
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    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: Sulfates why so bad?

    [EDIT] This link fixes the one above that is now broken. [END-EDIT]

    That's a great link/article. Thanks for posting it. It's one of the few references that gives a maximum limit (300 mg/L) for sulfate levels in pools. As for references on sulfate attack on cement and concrete, there is also Sulfate attack in concrete and mortar, Mitigating Sulfate Attack, External Sulfate Attack and Sulfate attack on cementitious materials containing limestone filler as well as a variety of articles on sulfate-resistant cement and concrete. This report goes into more detail about the mechanisms for sulfate attack in concrete.
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    Join Date
    Aug 2008
    Fredericksburg, VA

    Re: Sulfates why so bad?

    Quote Originally Posted by benavidescj View Post
    Here is a good article on why you should not.
    That site has evidently moved that article. Here's the new link.
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