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Thread: difference in test kits

  1. Back To Top    #1
    eazy's Avatar
    Join Date
    May 2015
    puyallup, wa

    difference in test kits

    I have a poolmaster 5 way test kit that I bought before I knew better. It doesn't even have a CYA test. The FC only goes up to 5.

    What is the difference in the way FC is tested an measured between this kit and the kits tfp recommends that are FAS-DPD. Will this type of test kit give FC numbers higher than 5?

    Is there a link I can learn about how test kits work?

    thanks in advance
    4440 gallons,intex round 15 x 48, ag, cartridge filter, krystal clear 637r filter pump,assembled and filled 5/15/2015
    poolmaster premier deluxe 5 way test kit, tap water

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: difference in test kits

    There are YouTube videos linked from the site.

    There is an extended test instructions sticky in the testing forum that describes all the tests.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: difference in test kits

    There are three common kinds of chlorine tests. OTO - drops turn the sample shades of yellow. Measures TC from 0 to 3. Some kits label to 5, but most people can't distinguish 3 from 5. DPD - drops turn the sample shades of pink. Measure FC and TC from 0 to 5 (or sometimes 10). Fairly good for low FC levels, but can read zero when FC is high. FAS-DPD - powder turns the sample pink and drops turn it back to clear. Measures FC and CC from 0 to 50 in steps of 0.5.

    All of the kits we recommend come with the FAS-DPD test kit, which is the only one precise enough to do the overnight FC loss test and works reliably up to high FC levels.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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