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Thread: Testing salt using strips---ok?

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    Testing salt using strips---ok?

    I notice there is a liquid salt test and a strip based test on the tftestkits site...I acknowledge that most people here shy away from the strip based tests for FC,TA,pH,etc , but are the salt test strips equally unreliable?
    17.4k gallon IG pool with attached spa (spa itself is 730gal), Super Blue Diamondbrite plaster, Circupool SI-45+ SWG, BH/Hayward Cartridge Filter, 2hp 2speed Hayward Super II pump, , Jandy Valves, Waterway Skimmers, Rheem 400k Heater, Polaris 360 cleaner, built 2000+-, replastered June 2015, TF-100 kit---Here's my pool test reading history

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    Mod Squad JVTrain's Avatar
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    Re: Testing salt using strips---ok?

    From my travels here around the TFP forums, it seems that the only strips that pass muster or are the only way of testing for certain levels. This would include salt and borates. Everything else should be drop based testing, but even the drop based salt test is better.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
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    JasonLion's Avatar
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    Re: Testing salt using strips---ok?

    The salt strips are usually fine, but now and then they are way totally wrong. We have never been able to figure out what it is that causes the rare incorrect results.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Testing salt using strips---ok?

    When they go wrong, is there some consistency in how they're wrong? Way wrong low, or way wrong high?
    17.4k gallon IG pool with attached spa (spa itself is 730gal), Super Blue Diamondbrite plaster, Circupool SI-45+ SWG, BH/Hayward Cartridge Filter, 2hp 2speed Hayward Super II pump, , Jandy Valves, Waterway Skimmers, Rheem 400k Heater, Polaris 360 cleaner, built 2000+-, replastered June 2015, TF-100 kit---Here's my pool test reading history

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    Re: Testing salt using strips---ok?

    Most SWG systems have a display showing salt level. The display is no more accurate than test strips, but if you keep your system happy and generating, all's good. So most here just go by the system's readout.
    chiefwej
    Tucson, AZ
    16x36 rectangular (19k) Pebble Tec play pool/spa, Pentair Intelliflo VS 011018, Super II 2hp (spa), Aqua Rite T-15 SWG, Pro Grid 60 DE, Hayward H400 & Heliocol Solar heating, A&A infloor system, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit

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    JasonLion's Avatar
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    Re: Testing salt using strips---ok?

    They have been reported wrong both too low and too high. We have been looking for common elements that might explain it, but haven't found much so far. Remember, this is rather rare to begin with, so there aren't that many confirmed cases to look at.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Patrick_B's Avatar
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    Re: Testing salt using strips---ok?

    It just seems there are bad batches sometimes. We use them for quick checks sometimes, and we have always chalked it up to flawed batches. We always use the ones from HACH, but sometimes they are just screwy. We toss the whole bottle and try...or order another.
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