Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 9 of 9

Thread: Taylor test kit

  1. Back To Top    #1

    Join Date
    Nov 2015
    Location
    Boston, MA
    Posts
    109

    Taylor test kit

    I use the taylor 2006 test kit. My dpd has turned black and hardened. I just ordered a replacement dpd. Why does thishappen? Its also stained my test tube vial with some black spots that i cant really get off.
    18x44 double Roman vinyl pool, Hayward superpump, Hayward DE Filter,
    Aqua Rite T15 SWG, Taylor k 2006 test kit

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Taylor test kit

    It gets wet from the humidity I would guess.
    It should still work if you crush it back up.

    You should be able to clean the vial with a little diluted muriatic acid.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3

    Join Date
    May 2016
    Location
    Troy IL
    Posts
    465

    Re: Taylor test kit

    This evening, I was looking at my tester cylinder that I use with my SpeedStir and noticed black residue on the bottom. I wondered what it was. Now I realize it must be from the dpd crystals that don't dissolve. They get smashed into the bottom by the magnetic stir bar and leave a stain.

    17,500 gallon IG Vinyl
    Pentair Tagelus TA60D Sand filter
    Pentair Challenger 1.5HP pump CFII N1 1.5A
    Taylor K-2006-A, Stenner 45MPHP10 auto chlorine feed

  4. Back To Top    #4
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,994

    Re: Taylor test kit

    Yep, the powder stains stuff blackish. The blue scooper, the tray the blue scooper sits in. My chlorine only test vial isn't stained though.
    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

  5. Back To Top    #5

    In the Industry

    Join Date
    May 2016
    Location
    Sparks, MD
    Posts
    15

    Re: Taylor test kit

    Quote Originally Posted by moreira85 View Post
    I use the taylor 2006 test kit. My dpd has turned black and hardened. I just ordered a replacement dpd. Why does thishappen? Its also stained my test tube vial with some black spots that i cant really get off.
    R-0870 (DPD Powder) and R-0871 (FAS-DPD Titrating Reagent) are more sensitive than most reagents and require extra care in storage. It sounds like your DPD Powder was exposed a little too long to humid conditions, which causes the black color you are seeing. This black can then get on other pieces in the kit. To prevent this from reoccurring, we recommend you avoid getting the little blue dipper spoon wet and that you make sure to recap reagents tightly after each use. Also, remember to follow good storage practices like keeping all reagents in a temperature range of 36-85F and keeping them out of direct sunlight.

    Finally, rinse any comparator tube or sample tube thoroughly after use to avoid any discoloration from reagent residue.

    Thank you for using Taylor products!

  6. Back To Top    #6

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,077

    Re: Taylor test kit

    Great advice above. Keeping my R-0870 inside and closing the lid tightly really retards that darkening and clumping. Cleaning the Cylinders, spoon, and anything that can have residual R-0870 will keep all you other stuff in good shape. If the mixing cylinder darkens, I use a little muriatic and water (3:1) and it cleans up easily.

    The overall takeaway is keep your testing material always clean and always indoors in a humidity and temp controlled environment. It really extends the life.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  7. Back To Top    #7

    Join Date
    May 2016
    Location
    Troy IL
    Posts
    465

    Re: Taylor test kit

    Well hey I didn't know Taylor had representation here. That's cool!

    I keep my entire test kit indoors, and honestly I even do most of my tests indoors (even though I know I probably shouldn't). After about 2 months of use now, I've got black marks in the bottom of my tube. I rinse thoroughly both before and after my tests, usually with reverse osmosis filtered water. I don't think there's any way to avoid it, you'll get some marks somewhere. But I'm not worried about it at this point. If it does get bad enough I'll do as duraleigh suggests.

    17,500 gallon IG Vinyl
    Pentair Tagelus TA60D Sand filter
    Pentair Challenger 1.5HP pump CFII N1 1.5A
    Taylor K-2006-A, Stenner 45MPHP10 auto chlorine feed

  8. Back To Top    #8
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Taylor test kit

    Weird. I have been using the same vial for years for the FAS-DPD and have never had dark marks appeared. There is slight discoloration, but not enough that I have felt the need to try to clean it.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  9. Back To Top    #9


    Join Date
    Jul 2011
    Location
    Stockton, CA
    Posts
    63

    Re: Taylor test kit

    Very interesting, and glad to find this thread. I just posted a new thread, "Problem with R-0870" with similar issues. I can't get the solutions to go clear during the test, and am guessing at the results. Never had this before in 4-5 years. My test kit is inside my workroom, not air conditioned, and sometimes gets into the 90's. In central California the humidity never gets above 20%. I screw the lid onto the R-0870 tight. That stuff was clumped when it arrived, fresh, a few months ago, and has gotten darker and darker. My test vial is also stained purple.

    I'll ask TFT for a replacement.
    22,500 gal, in-ground, plaster, Intelliflo VS 3050 pump, Sta-Rite 400 sq. ft. cartridge filter, solar panels on roof

Posting Permissions

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