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Thread: FAS/DPD Test question

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    Medeco's Avatar
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    FAS/DPD Test question

    I suppose this goes for all testing?

    When testing for the CC, after 1 drop, if the water is mostly clear with a slight pink hue, is that a Zero or a One? Im talking about a very slight pink color left.

    Thanks!
    IG pool, vinyl, 35k gallons, Hayward 1hp super pump series, Hayward top mount sand pump S244T with vari-flo XL, SWG-Saline Generating systems Breeze 540, Hayward SharkVac XL,

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    pwrstrk's Avatar
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    Re: FAS/DPD Test question

    For testing CC add five drops of the reagent no matter when or if it turns pink. If it takes one drop to back to clear your fine. That's a CC of 0.5. If it takes 2 drops to go back to clear that's a CC of 1 and needs to be addressed. 😎
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Mod Squad jblizzle's Avatar
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    Re: FAS/DPD Test question

    All the test you add drops until the last one gives no color change. Sounds like 1 drop and it is not clear, a 2nd drop would make it clear, and the 3rd would do nothing ... making the CC = 2drops * 0.5 = 1ppm
    Jason, TFP Moderator
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    Medeco's Avatar
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    Re: FAS/DPD Test question

    Thanks, I figured so, but wanted to be sure since I'm new to this.
    IG pool, vinyl, 35k gallons, Hayward 1hp super pump series, Hayward top mount sand pump S244T with vari-flo XL, SWG-Saline Generating systems Breeze 540, Hayward SharkVac XL,

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