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Thread: DPD powder is grey, is it ok?

  1. Back To Top    #1

    Join Date
    May 2009
    Location
    Jasper, TN
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    249

    DPD powder is grey, is it ok?

    DPD powder a little over a year old (from tftestkits) is grey and I didn't really notice it until I got my new refill yesterday and it's snow white in color in comparison.

    I guess my first batch started out totally white but just over time didn't notice the change.

    Is it still good? I have maybe 10-15 tests left in it I think but got a refill just to have on hand.
    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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    frustratedpoolmom's Avatar
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    May 2007
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    SWSuburban Chicago, IL
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    11,965

    Re: DPD powder is grey, is it ok?

    Yes, it should still be good. You can do side by side tests with the new to compare if you like.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    37,879

    Re: DPD powder is grey, is it ok?

    Yes, it is still good. As R-0870 gets older it gets darker. It is still good even if it is black. As it gets older it also tends to clump up. If it has clumped significantly, you should crush it back into a slightly lumpy powder.
    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

  4. Back To Top    #4

    Join Date
    May 2009
    Location
    Jasper, TN
    Posts
    249

    Re: DPD powder is grey, is it ok?

    Excellent, 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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