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Thread: Can I do the DPD-FAS chlorine test in my magnetic stirrer?

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    Join Date
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    Can I do the DPD-FAS chlorine test in my magnetic stirrer?

    Can I do the DPD-FAS chlorine test in my magnetic stirrer? I have the original PS233 from PoolSolutions (don't worry--I update reagents occasionally) and it came with 2 Taylor sample tubes, one of them clearly marked "Chlorine test only." My stirrer is not the Taylor one but has a glass beaker and a plastic-coated stirrer. Is there a contamination issue or something? I have always wondered about this and it's the only drop test I am still mechanically swirling all these years.

    Also, which reagents and indicators "go bad" more quickly?
    Salinda
    owner of ~37,000 gallon plaster IG pool/spa combo. Intelliflo VS+ filter pump, 2 hp whisperflo spa jet pump, Jandy Aqualink RS-6 with iAqualink upgrade, The Pool Cleaner 4x suction cleaner, Clean & Clear Plus 520 cartridge filter, Zodiac Clearwater LM2-40 SWG, Sta-rite 400k heater, solar heat pads and coils, Solar-Breeze NX.

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    Mod Squad jblizzle's Avatar
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    Re: Can I do the DPD-FAS chlorine test in my magnetic stirrer?

    You can use the stirrer for everything, there is no contamination if you rinse everything.
    The chlorine only tube is just because the FAS-DPD test can discolor the plastic tube (you can clean it with muriatic acid).

    You can find info about knowing when reagents go bad in this thread: http://www.troublefreepool.com/threa...Kit-Directions or Taylor also lists the info on their site somewhere.
    Jason, TFP Moderator
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    elwood58's Avatar
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    Re: Can I do the DPD-FAS chlorine test in my magnetic stirrer?

    I use my speedster for the DPD-FAS Test every time. Add pool water first, then Powder, then drop the stir pellet in. Provides very consistent results.
    19204 Gallon L Shape with a 10X10 2nd Step Baja Ledge. Intellichlor IC-40, IntellipH, Cartridge Filter, Pentair Heater/Chiller (Heat Pump). Tons of Deck with Deck Jets. Construction Complete 6/5/17.

    "If you don't measure it, you can't manage it!"

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    JasonLion's Avatar
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    Re: Can I do the DPD-FAS chlorine test in my magnetic stirrer?

    The FAS-DPD test slowly builds use a milky coating on the test vial. The coating can be removed, but it takes a little effort.
    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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