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Thread: Salt test strips

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    Pepo's Avatar
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    Salt test strips

    Hello,
    Just want to get some feedback on how accurate are the salt test strips from the tfp online store?

    Thanks!

    15k Gal. ig Pool & Spa quartz plaster, Hayward super pump II 2.5 HP, Hayward 425 sf. cartridge filter,
    PS-4 Goldline automation, SWG(not working) using liquid chlorine now, Hayward 250k BTU propane spa heater.

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    mas985's Avatar
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    Re: Salt test strips

    In general, salt strips will have a limited shelf life and in my experience, not very accurate. I would get a drop kit instead. It is much more accurate and lasts until you run out of reagents.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Mod Squad pooldv's Avatar
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    Re: Salt test strips

    I have the aquachek strips and they are ok. Not very accurate is correct. But, they've been close enough to keep my SWG happy for 5 seasons.
    TFP Moderator
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    JoyfulNoise's Avatar
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    Re: Salt test strips

    The reported tolerance of the Aquacheck strips is usually about +/-400ppm. However, they are affected by humidity and the people neglect to read the instructions where they specifically say that the strip must be placed in a test tube filled with about 1" of water. And every bottle of strips is different because the number on the strip is calibrated to a chart on the bottle.

    The K-1766 drop based titration test uses a 10mL water sample volume and has a tolerance of +/-200ppm (the titrant precision is 200ppm/drop). However, one can simply use a larger water sample and get better precision - a 25mL water sample will have a titrant precision of 80ppm/drop. Also, the K-1766 measures the EXACT chloride ion (Cl-) concentration and has no interferences associated with it (unless you add cyanide or bromine to your pool water). So the salt level determination from a K-1766 is a very accurate representation of the salinity level of your water.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    Pepo's Avatar
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    Re: Salt test strips

    Thanks all for the info
    I will go with a drop test!

    15k Gal. ig Pool & Spa quartz plaster, Hayward super pump II 2.5 HP, Hayward 425 sf. cartridge filter,
    PS-4 Goldline automation, SWG(not working) using liquid chlorine now, Hayward 250k BTU propane spa heater.

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