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Thread: Poolside pH Test Method - Are they all basically the same?

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    Join Date
    Jul 2009
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    Eden Prairie, MN
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    Poolside pH Test Method - Are they all basically the same?

    Do all the pH test kits use Phenol Red? If so, I'm guessing the accuracy between suppliers is similar. Is this true?

    Thanks.
    AGP partially buried, with surrounding deck and flower bed. 12 x 24 oval x 48" deep Celebration by Forum. Steel sides, vinyl liner. Hayward 2 HP sand pump. Flower fountain - works well to cool water up to 10 degrees.

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    JasonLion's Avatar
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    May 2007
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    Re: Poolside pH Test Method - Are they all basically the sam

    Yes, and no. All of the drop based test kits use phenol red, but different kits are compensated for the various interferences differently. For example some of the cheaper kits start being wildly wrong when FC levels are as low as 5, while the Taylor chemistry remains accurate with FC up to 10 and usable to some extent with FC up to 15.
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    Join Date
    Jul 2009
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    Eden Prairie, MN
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    37

    Re: Poolside pH Test Method - Are they all basically the sam

    Many thanks Jason. That is exactly what I needed to know. This site is the best!
    AGP partially buried, with surrounding deck and flower bed. 12 x 24 oval x 48" deep Celebration by Forum. Steel sides, vinyl liner. Hayward 2 HP sand pump. Flower fountain - works well to cool water up to 10 degrees.

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