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Thread: Chlorine FAS/DPD Test

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    Rocket50's Avatar
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    Chlorine FAS/DPD Test

    Bought the TF-100 test kit and seems like the chlorine FAS/DPD powder is going very quickly. No way I will get approx 75 tests from the amount that came with the kit. Directions state heaping scoop but I have been dialing back since I am doing a SLAM right now. Should I use smaller scoops? Just can't see this lasting much longer at this rate of 3-4 tests daily.
    33K, IG, vinyl liner, 15 years old (??), 20x40, 3-8 feet deep, Hayward pump 1.5 HP, Hayward S240 sand filter (300 lbs of sand), Dolphin Triton robotic cleaner, TF-100 test kit.

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    cowboycasey's Avatar
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    Re: Chlorine FAS/DPD Test

    as long as the water in the test tube turns pink and there are a few chunks left in the bottom you are good
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    Mod Squad YippeeSkippy's Avatar
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    Re: Chlorine FAS/DPD Test

    As you are doing a SLAM, use 10 mL of pool water and 1 rounded scoop of powder. You should be able to perform accurately with that. Each drop of 0871 reagent is counted then multiply by 0.5 (or just divide by 2, lol)

    Go ahead and order more test reagents now as you've got a lot of summer ahead to test
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
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    Mod Squad jblizzle's Avatar
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    Re: Chlorine FAS/DPD Test

    That is why we generally recommend the XL option when you know you have a slam to do. At higher FC levels you also need to use more powder than you will when you get down to maintenance levels.
    Jason, TFP Moderator
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    ned8377's Avatar
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    Re: Chlorine FAS/DPD Test

    Get the Taylor Replacement Reagent R-0870-J DPD Powder .25-Pound by Taylor Technologies on Amazon for $29.00. That's a little over 11 10 gram containers.
    True L 45,000 gal Hayward IG vinyl pool. Hayward Tristar 2.40 THP; 1.5 FRHP/1.60 SF. Hayward Model # S310T2 Sand Filter. Aqua Rite T-15. Aqua Comfort 154,000 BTU Heat Pump. TF-100

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    Rocket50's Avatar
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    Re: Chlorine FAS/DPD Test

    Thanks guys!
    33K, IG, vinyl liner, 15 years old (??), 20x40, 3-8 feet deep, Hayward pump 1.5 HP, Hayward S240 sand filter (300 lbs of sand), Dolphin Triton robotic cleaner, TF-100 test kit.

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    Rocket50's Avatar
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    Re: Chlorine FAS/DPD Test

    Quote Originally Posted by ned8377 View Post
    Get the Taylor Replacement Reagent R-0870-J DPD Powder .25-Pound by Taylor Technologies on Amazon for $29.00. That's a little over 11 10 gram containers.
    Does the powder have a limited shelf life? That might be a few years of testing.
    33K, IG, vinyl liner, 15 years old (??), 20x40, 3-8 feet deep, Hayward pump 1.5 HP, Hayward S240 sand filter (300 lbs of sand), Dolphin Triton robotic cleaner, TF-100 test kit.

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    Mod Squad jblizzle's Avatar
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    Re: Chlorine FAS/DPD Test

    Depends how it is stored and how old it was by the time you get it. Should be good for close to 2 years.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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