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Thread: Question about the TA test with the TF-100 test kit

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    Question about the TA test with the TF-100 test kit

    It says in the instructions for the TA test to:

    "3. Add R-009 one drop at a time, swirling between each drop. Wipe the tip of the bottle after every drop with a damp cloth."

    I'm wondering about the "Wipe the tip of the bottle after every drop with a damp cloth" part. Why is this necessary? And how important is it?
    30K gal, 18x40 IG vinyl, 2 Speed 3/4hp Pentair Superflo Pump, Hayward S-244T Sand filter, BBB, TF-100

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    Richard320's Avatar
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    Re: Question about the TA test with the TF-100 test kit

    Quote Originally Posted by Krtismo
    It says in the instructions for the TA test to:

    "3. Add R-009 one drop at a time, swirling between each drop. Wipe the tip of the bottle after every drop with a damp cloth."

    I'm wondering about the "Wipe the tip of the bottle after every drop with a damp cloth" part. Why is this necessary? And how important is it?
    Static electricity can build up and cause the drops to be smaller than they should be, which will give you a false high TA reading. Probably only necessary for the first couple days, and anytime your TA makes an unexpected jump.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Mod Squad jblizzle's Avatar
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    Re: Question about the TA test with the TF-100 test kit

    I CERTAINLY noticed this when I got my new kit this year TA with old test was about 70 and then with the new test was 120. I could visually see that the drops were not as big and seemed to jump off the tip quickly.

    Confirmed with Dave that this is indeed what happens and that usually the static goes away after a while. I still have to be careful and think it may still be reading a little high, but it is not as bad as my initial tests.
    Jason, TFP Moderator
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    Re: Question about the TA test with the TF-100 test kit

    Follow-up question:

    Is it important whether or not to allow air back in through the tip with each drop, or will you get the same results by putting in each drop with one progressive squeeze?
    Matt
    9k gallon, plaster, IG. Raised spa w/ spillover into pool. AO Smith Century Centurion / Purex Triton WisperFlo 0.5 HP, Hayward 1.5 HP (spa), Polaris 1-516-01 1.5 HP (blower). Hayward DE3620 36 ft2 72 GPM DE Filter, Polaris 145 cleaner. Pool built ~1980.
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    Mod Squad jblizzle's Avatar
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    Re: Question about the TA test with the TF-100 test kit

    My problem was at first the regent was just falling out as soon as I turn the bottle over. So I was have to squeeze the bottle upright and turn it over while sucking in to be able to control the drops.

    Usually, you should be able to just squeeze out a nice drop every second and not hat to such air back in.
    Jason, TFP Moderator
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    Re: Question about the TA test with the TF-100 test kit

    Thanks for explaining this! I redid my test the correct way and my TA dropped from 110 to 80.

    I guess I should start following directions!
    30K gal, 18x40 IG vinyl, 2 Speed 3/4hp Pentair Superflo Pump, Hayward S-244T Sand filter, BBB, TF-100

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