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Thread: A Tale of Two Test Kits: TF-100 vs. ColorQ

  1. Back To Top    #1

    Join Date
    May 2015

    A Tale of Two Test Kits: TF-100 vs. ColorQ

    I started out with the ColorQ 7 in June, but had a brief issue with high CC numbers that led me to do a prophylactic SLAM. I found out at that time my ColorQ couldn't measure anything over 10ppm, so I ordered up the TF-100.

    I got through my SLAM in about five days using all the info and tips learned here in the forums (thank you, TFP!!), along with some creative manipulation of the ColorQ test that allowed me to measure what I thought was 16-18ppm FCL.

    Once I got both test kits, of course, I wanted to compare results. Turns out, they are very different. For example, today, the ColorQ shows me a 5.02 for FCL and 5.11 for TCL (CC of .09), while the TF-100 took 17 drops to clear (8.5 FCL) and one drop to clear the CC test (>.5).

    Three questions: 1) Am I doing something wrong? 2) Is this result expected? 3) Which test is correct?
    11,400 gallon IG Vinyl liner pool 34' x 14' - 2 skimmers, 2 bottom drains, 3 LED RGB lights, 3 fountains
    Pump: Pentair 1HP and Badu Dual Jet 4.5HP - Filter: Pentair System 3 Sand filter
    Heater: Rheem 206K BTU - Test Kits: LaMotte ColorQ 7 and TF-100

  2. Back To Top    #2
    Donldson's Avatar
    Join Date
    Jun 2009
    NW Ohio

    Re: A Tale of Two Test Kits: TF-100 vs. ColorQ

    1) I assume you are probably doing the tests correctly

    2) Given the previous experiences from forum users I fully expect the ColorQ to be less accurate than the FAS-DPD test

    3) Trust the TF-100
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter.
    Pool School - PoolMath - HIGHLY Recommended Test Kits

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: A Tale of Two Test Kits: TF-100 vs. ColorQ

    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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