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Thread: CC testing with TF-100 test kit

  1. Back To Top    #1

    Join Date
    May 2015
    Auburn, NH

    CC testing with TF-100 test kit

    I have been using my new TF-100 test kit and I had a question about testing CC.

    Using a 10ml sample: after I test for FC and I add 5 drops of R-0003, I get a very faint pink color. One of R-0871 drop makes it go away, so that is roughly .5

    My question is, do I need to use a 25ml sample to know just how close to .5 I am, or do I only worry about this if I have to add 2 drops of R-0871 to make the pink go away?

    17K gal, IG vinyl, 1.5 HP Pentair SuperMax VS pump, 300 sqft Pentair Sta-rite System3 cartridge filter, Pentair Intellichlor SWG, The Pool Cleaner 4-wheel Suction Cleaner, New Pool Build May 2015, TF-100, Well Water

  2. Back To Top    #2
    Mod Squad JVTrain's Avatar
    Join Date
    Feb 2014
    Central Minnesota

    Re: CC testing with TF-100 test kit

    No need to do the 25 mL test. As long as your CC is 0.5 or less (1 drop or no color change) you're good to go.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
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  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: CC testing with TF-100 test kit

    Technically, you want the CC to never need more than 1 drop to clear as the CC should be very near 0.
    If you did the 25ml test, we would still not want you to have to use more than 1 drop, meaning ideally the CC would be < 0.2

    That said, just use the 10ml and 0.5ppm increments ... that is plenty precise.
    Jason, TFP Moderator
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