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Thread: Does DE have a shelf life?

  1. Back To Top    #1

    Join Date
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    Does DE have a shelf life?

    Quick question, have searched as best I can but cannot find if this has been asked before. Basically I have been hunting around where I live for DE (more about the challenges for pool care in Zimbabwe detailed in this: http://www.troublefreepool.com/no-wa...st-t71335.html post) for about 6 months now in order to experiment with the method of adding small amounts to sand filter for added water polish/ filtering.

    Today, unexpectedly and finally I came across a guy who had some unopened bags of the stuff (pool grade sold under the name of Africhem, a pool chemical company in SA) he said it had been lying around for years, between 5-20 years he didn't know as he didn't buy it. He reckoned it was out of date now so gave it to me for free.

    Does this stuff go bad?

    I hope not as then I have 10kg's of it for free!!!!!!

    Cheers as always for help and input received.

    Mike
    Mike
    Located in sunny Zimbabwe, Southern Africa.
    20300Gal IG Concrete shell, fully tiled, built circa 1960. 1 Skimmer, 2 Returns. 1.5 hp Onga single speed pump. 200lb "Quality®" Sand filter. DIY Auto Chlorine Injection setup. PoolSkim.
    Barracuda Pacer G2. TF-100-XL & Speedstir.
    BBB all the way, elbow grease to brush each morning!
    Home-Made FAS/DPD work in progress.

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
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    Re: Does DE have a shelf life?

    It does not go bad per-se. There are things that could happen to it to make it unusable but if it's still in bags, is still powder and is still white, it's good.
    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
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  3. Back To Top    #3

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    Re: Does DE have a shelf life?

    That is exactly what I was hoping to hear

    Will post a pic but as far as I can tell looks pretty good to me!!
    Mike
    Located in sunny Zimbabwe, Southern Africa.
    20300Gal IG Concrete shell, fully tiled, built circa 1960. 1 Skimmer, 2 Returns. 1.5 hp Onga single speed pump. 200lb "Quality®" Sand filter. DIY Auto Chlorine Injection setup. PoolSkim.
    Barracuda Pacer G2. TF-100-XL & Speedstir.
    BBB all the way, elbow grease to brush each morning!
    Home-Made FAS/DPD work in progress.

  4. Back To Top    #4
    Administrator Leebo's Avatar
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    Re: Does DE have a shelf life?

    Just make sure there was zero moisture around the bags. A bit of water ruins the entire bag quickly.

  5. Back To Top    #5

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    Re: Does DE have a shelf life?


    Untitled by pommezimbo, on Flickr

    The yellow brown dots are just on the plastic, not in the powder inside
    Mike
    Located in sunny Zimbabwe, Southern Africa.
    20300Gal IG Concrete shell, fully tiled, built circa 1960. 1 Skimmer, 2 Returns. 1.5 hp Onga single speed pump. 200lb "Quality®" Sand filter. DIY Auto Chlorine Injection setup. PoolSkim.
    Barracuda Pacer G2. TF-100-XL & Speedstir.
    BBB all the way, elbow grease to brush each morning!
    Home-Made FAS/DPD work in progress.

  6. Back To Top    #6

    Join Date
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    Harare, Zimbabwe
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    Re: Does DE have a shelf life?


    Untitled by pommezimbo, on Flickr
    Mike
    Located in sunny Zimbabwe, Southern Africa.
    20300Gal IG Concrete shell, fully tiled, built circa 1960. 1 Skimmer, 2 Returns. 1.5 hp Onga single speed pump. 200lb "Quality®" Sand filter. DIY Auto Chlorine Injection setup. PoolSkim.
    Barracuda Pacer G2. TF-100-XL & Speedstir.
    BBB all the way, elbow grease to brush each morning!
    Home-Made FAS/DPD work in progress.

  7. Back To Top    #7

    Join Date
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    Harare, Zimbabwe
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    Re: Does DE have a shelf life?

    Thank's for the tip leebo, how can I tell if that has happened, does it clump up or something?
    Glad you mentioned that actually as was going to leave by the filter but now will move inside to keep dry out of rain etc
    Mike
    Located in sunny Zimbabwe, Southern Africa.
    20300Gal IG Concrete shell, fully tiled, built circa 1960. 1 Skimmer, 2 Returns. 1.5 hp Onga single speed pump. 200lb "Quality®" Sand filter. DIY Auto Chlorine Injection setup. PoolSkim.
    Barracuda Pacer G2. TF-100-XL & Speedstir.
    BBB all the way, elbow grease to brush each morning!
    Home-Made FAS/DPD work in progress.

  8. Back To Top    #8
    Administrator Leebo's Avatar
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    Re: Does DE have a shelf life?

    Normally if the bag is unopened it's OK, but being so old you never know. Kinda feel the bag, and it should feel like a bag of flour. If it's hard, it's got wet.

    Now that I re-read and see it was free enjoy. You got a score!

  9. Back To Top    #9

    Join Date
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    Re: Does DE have a shelf life?

    The powder inside is still thankfully just that- powder, like flour or talc. So looks like it's survived pretty good- score I think indeed!!!

    Cheers leebo
    Mike
    Located in sunny Zimbabwe, Southern Africa.
    20300Gal IG Concrete shell, fully tiled, built circa 1960. 1 Skimmer, 2 Returns. 1.5 hp Onga single speed pump. 200lb "Quality®" Sand filter. DIY Auto Chlorine Injection setup. PoolSkim.
    Barracuda Pacer G2. TF-100-XL & Speedstir.
    BBB all the way, elbow grease to brush each morning!
    Home-Made FAS/DPD work in progress.

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