Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: Is my DPD powder still good?

  1. Back To Top    #1

    Join Date
    May 2013
    Location
    Long Island NY
    Posts
    419

    Is my DPD powder still good?

    my DPD powder (0870) is turning a shade or 2 on the gray side. I assume this is just because of moisture getting to the powder. It's still usable isn't it?
    19,000 gal - Vinyl IG - Sand filter -1.5hp. - Taylor k 2006 - Loop Loc cover

  2. Back To Top    #2
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,999

    Re: Is my DPD powder still good?

    Yes, that is normal..
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  3. Back To Top    #3

    Join Date
    May 2013
    Location
    Long Island NY
    Posts
    419

    Re: Is my DPD powder still good?

    Thanks!
    19,000 gal - Vinyl IG - Sand filter -1.5hp. - Taylor k 2006 - Loop Loc cover

  4. Back To Top    #4

    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: Is my DPD powder still good?

    See the Taylor article on Recognizing a Compromised Reagent that says:

    As it degrades, the color will turn from an off-white color to gray or purple-gray and will gradually become a purple-brown color.
    The gray is OK, but when it starts to get purple and especially purple-brown it needs to be replaced.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

  5. Back To Top    #5

    Join Date
    May 2013
    Location
    Long Island NY
    Posts
    419

    Re: Is my DPD powder still good?

    Ok, thanks chem Geek, I think I'm good then. I had bought some more at the start of the season and put the gray color stuff on the shelf. I think I will go ahead and use it up before it turns purple.
    19,000 gal - Vinyl IG - Sand filter -1.5hp. - Taylor k 2006 - Loop Loc cover

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •