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Thread: TFTK DPD drop test, stop counting when clear or almost?

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    Join Date
    May 2009
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    Jasper, TN
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    TFTK DPD drop test, stop counting when clear or almost?

    When using the TFTest Kit DPD drop test for CL, do you stop counting drops when the sample is PERFECTLY clear or almost?

    Just about every time when I test, the sample will turn almost clear... sometimes there's a hint of pink hue, sometimes a purplish/bluish hue that is only noticeable when held up to the sun. And then one more drop makes it absolutely clear. It's a very subtle change on the last drop almost no change but it is a change.

    So does that drop count or not?
    24' x 52" AGP = 13.5k gallons
    Dynamo 2.0 HP pump,Sand Dollar sand filter
    Polaris 65 vacuum (good when there are a ton of leaves on bottom), Pool Rover Jr. (LOVE it, but power box dead right now), AquaCritter (an excellent suction side cleaner)

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    Mod Squad Bama Rambler's Avatar
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    Re: TFTK DPD drop test, stop counting when clear or almost?

    The last drop that makes a change counts. I dop till it turns clear then one more just to make sure and don't count the last drop.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Join Date
    May 2009
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    Jasper, TN
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    Re: TFTK DPD drop test, stop counting when clear or almost?

    Quote Originally Posted by Bama Rambler
    The last drop that makes a change counts. I dop till it turns clear then one more just to make sure and don't count the last drop.
    Ok cool, thanks.
    24' x 52" AGP = 13.5k gallons
    Dynamo 2.0 HP pump,Sand Dollar sand filter
    Polaris 65 vacuum (good when there are a ton of leaves on bottom), Pool Rover Jr. (LOVE it, but power box dead right now), AquaCritter (an excellent suction side cleaner)

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