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Thread: Alternate test procedures for the TF Test Kit

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    JasonLion's Avatar
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    Alternate test procedures for the TF Test Kit

    For peope who feel confident in their testing and want more flexibility, Taylor has alternate instructions for the FAS-DPD chlorine, total alkalinity, and calcium tests that measure in different increments. The TF Test Kit, which is based on the Taylor chemistry, doesn't come with the alternate directions so I thought I would post them here.

    For the FAS-DPD free and combined chlorine test you can use a 25 mL water sample, instead of the usual 10 mL sample. When you do this each drop of R-0871 then counts as 0.2 ppm, instead of the usual 0.5 ppm. This is handy if you want more accurate results, but it uses more titrant and can get tedious.

    For the Total Alkalinity test you can use a 10 mL sample, 1 drop of R-0007, 3 drops of R-0008, and each drop of R-0009 then counts as 25 ppm. This is handy if your alkalinity is very high, plus it saves on reagents.

    For the Calcium Hardness test you can use a 10 mL sample, 10 drops of R-0010, 3 drops of R-0011L, and each drop of R-0012 then counts as 25 ppm. This is handy if your hardness is somewhat high, plus it saves on reagents.

    It is also possible to save on CYA reagent by using the CYA mixing bottle and view tube from a WalMart HTH 6 way kit with the reagent from the TF Test Kit. This will only measure down to 30, instead of 20 using the TF Test Kit components, and it is a narrower tube that is more difficult to look into. But it allows you to do about twice as many tests with the supplied reagent.
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    wmorge's Avatar
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    Re: Alternate test procedures for the TF Test Kit

    Can we use only 5ml of water vs 10ml and not divide the drops for fas/dpd test?
    16x32 I.G. Vinyl, Hayward Pro High-Rate Sand S220T, Vari-Flo XL Valve, Hayward Super Pump 1Hp , Great White cleaner, Hayward W530 Leaf Canister, TF100, Pool Skim.

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    JasonLion's Avatar
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    Re: Alternate test procedures for the TF Test Kit

    Yes. Just keep in mind that doing this reduces the precision a bit, though it is still reasonable for rather high FC levels (say 20 to 50).
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    wmorge's Avatar
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    Re: Alternate test procedures for the TF Test Kit

    Does the accuracy fall lower or higher ?
    16x32 I.G. Vinyl, Hayward Pro High-Rate Sand S220T, Vari-Flo XL Valve, Hayward Super Pump 1Hp , Great White cleaner, Hayward W530 Leaf Canister, TF100, Pool Skim.

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    Mod Squad jblizzle's Avatar
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    Re: Alternate test procedures for the TF Test Kit

    Lower since each drop is now 1ppm instead of 0.5 or 0.2ppm
    Jason, TFP Moderator
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    Re: Alternate test procedures for the TF Test Kit

    I just got my TF-100 Ill be using my DPD kit for my twice daily FC and PH testing. Ill break out the TF-100 on the weekend or if a problem arises.

    Doing the TA CH tests this way will make my kit last longer.... whoohoooo! TFP FTW!
    15'x4' Metal Frame Intex (new this year) 16" 2650gph intex sand filter, 1000gph intex pump (heater) Solar Cover TF-100 testkit, TFPC

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    Re: Alternate test procedures for the TF Test Kit

    Can we get a STICKY on this PLZ
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    JasonLion's Avatar
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    Re: Alternate test procedures for the TF Test Kit

    There is a far more detailed article in the Further Reading section of Pool School that covers this same material and far far more.
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    Mod Squad jblizzle's Avatar
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    Re: Alternate test procedures for the TF Test Kit

    It is also already a sticky in the testing forum
    Jason, TFP Moderator
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    Re: Alternate test procedures for the TF Test Kit

    On the CYA test, I just mix 10ml pool water with 10ml reagent and use the supplied sight tube. It gives results from 30-100. I know my CYA will be in that range and it cuts reagent use by about 50%.
    chiefwej
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    Re: Alternate test procedures for the TF Test Kit

    I was running low on the chlorine regent. That is why I tested with 5 ml of water. Today I received more in the mail and tested with 10 ml of water -15 drops and then 5 ml took 8 drops. 7 drops left it a faint pink. so generally the same 7.5 FC.. Now my question is with the cc's, With 10 ml of water. I used the 5 drops of the R-003 reagent. It took 1 drop of the R-0871 to clear it. I then tested with 5 ml of water.. used 5 drops( R-003) again 1 drop of the 0871 cleared it. Is my cc's 1 or .05 ?
    16x32 I.G. Vinyl, Hayward Pro High-Rate Sand S220T, Vari-Flo XL Valve, Hayward Super Pump 1Hp , Great White cleaner, Hayward W530 Leaf Canister, TF100, Pool Skim.

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    Re: Alternate test procedures for the TF Test Kit

    Quote Originally Posted by JasonLion View Post
    For the Calcium Hardness test you can use a 10 mL sample, 10 drops of R-0010, 3 drops of R-0011L, and each drop of R-0012 then counts as 25 ppm. This is handy if your hardness is somewhat high, plus it saves on reagents..
    These are the exact directions listed on the instruction card that came with my (recently purchased) TF-100. If I wanted to use a 25mL sample for increased precision, how many drops of R-0010 and R-0011L would I use? And then would each drop of R-0012 count as 10ppm?

    ***EDIT*** Nevermind, I just found it in the "One Page Test Kit Directions" thread. 20 drops R-0010, 5 drops R-0011L, and x10
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    Re: Alternate test procedures for the TF Test Kit

    It would be read as 0.5 ppm, not 0.05.
    17.5K gal,31' x 15' IG plaster, Depth 4'-6', Built 2015, Pump: Jandy Pro Series Model FHPM 2.HP -2-Spd, 88gpm Turnover 3.3 Hrs; Heater: Jandy JE Heat Pump Model 2500T SWCG: Jandy AquaPure Ei Series Mod. Apure35 Max Output Hypochlorous Acid = 420 g of FC per day = 0.2666 ppm per hour; Filter: Jandy Pro Series Model CS 200; Cleaner: Jandy MX8, Test Kit: Taylor K-2006 Salt; City Water:Doral, FL. Stenner 45M1 for acid.

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