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Thread: Reagent shelf life

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    Join Date
    Jun 2009

    Reagent shelf life

    How often must I update my reagents? Mine are exactly one year old. I have the tfp-100. Also, when doing the FC test, I put a second vial with clear pool water in it to compare with the vial I'm testing. The question is, should the testing vial be brought to be as clear as the plain pool water? Being color blind, I am trying this method to determine if all the pink is gone. But it seems to me that it never gets as clear as the plain water vial.
    18k gals, IG vinyl, Hayward DE, Aquarite Goldline SWG, Jandy XL3 heater, spill over spa, X-stream slide,2 hp super II pump

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    mickey4paws's Avatar
    Join Date
    Apr 2009
    S.E. MI

    Re: Reagent shelf life

    I am using my reagents from the TF100 I bought last year and they're fine. I think as long as you store your reagents well (lids on tight and in a cupboard or closet), I've been told they should last a couple of years.

    As to your FC test, the water should be clear, as clear as your plain water vial. If you're still seeing traces of pink, then you haven't added enough drops yet.
    IG 12' x 39' - 20k Gallons - Vinyl Lined - StaRite Cristal-Flo II 26" Sand Filter - Hayward SuperPump 1 hp - Dolphin Dynamic autocleaner - Lochinvar Energyrite gas heater - Aqua Rite SWCG T-15 - TF100 Test Kit - Skimlite Duallly 9016 pole (great pole)

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    Join Date
    Jan 2009
    Cupertino, CA

    Re: Reagent shelf life

    The official reagent lifetime is 1 year under normal circumstances. Kept in a cool dark place, they should go longer; some people report 2 years, even more.

    In the FC test, after the pink is gone I see what might be a yellow tinge in the vial. It is not as colorless as a straight water sample.
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
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    Water testing instructions on one page

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Reagent shelf life

    Most of the reagents will last years and years, but a couple of them are less stable. With careful storage I can consistently get three years on everything. If you leave them out in the sun or store them somewhere hot or let them freeze the life time can be way shorter.
    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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    Lana537's Avatar
    Join Date
    May 2009
    The Triangle, NC

    Re: Reagent shelf life

    From what I can see of the TFP pictures, looking at the link in Pool School, some of the reagents are still in their Taylor bottles. It is a cinch to phone Taylor and the humans who answer (no phone trees!) will be able to check the lot numbers on your bottles against their data and tell you if your reagents are "Fresh", "Usable", or whatever....I've never had any of my reagents last long enough for them to garner a grade of less than "Usable".

    23,600 gallon, refurbished 1960's inground concrete, Jandy sand filter w Jandy 2 hp variable speed pump, Pool Pilot Digital SWCG+Chemtrol 2100+CO2 tank; PebbleTec White Pearl with 10% Cobalt Blue Dark Beadcrete by Olympic Pool Plastering, Georgia. Taylor K-2006 Test Kit; Aqua Check Salt test; LaMotte borates test, and Jack's Magic Sequest test kit; SparklyPoolitis level: extremely high.

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