Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: SampleSizer and using Taylor #9198 Test tube exclusively

  1. Back To Top    #1
    JamieP's Avatar
    Join Date
    May 2011
    Location
    Waxahachie, TX (south of Dallas)
    Posts
    1,135

    SampleSizer and using Taylor #9198 Test tube exclusively

    Has anyone noticed any testing discrepancies when using the Taylor test tubes vs the ones that come with the TF-100? I finally got the SampleSizer and like it so much for the quickness and ease that I've ordered extra Taylor tubes to use for all my tests. One strange thing I noticed though, is when I compared how I used to measure using the regular tubes (carefully having the bottom of the meniscus sit on top of the black line) and then poured this amount into the Taylor vial, the sample measures visibly higher in the Taylor vial. It's enough that the SampleSizer displaces the water to have it then measure exactly on the Taylor line.

    Was I filling the regular tube incorrectly? Is the meniscus supposed to sit on top of the line, in the middle, or below? It's a wider tube, so maybe if it's not supposed to sit on the top of the line this would account for the higher reading in the Taylor tube.

    I do wonder, though, how much does this difference affect testing? It seems like a slightly larger water sample might give slightly higher readings? Since I'll be taking advantage of the SampleSizer for my future tests it's a moot point for me, but I am curious since it might make the difference between being within range for FC or unwittingly too low.
    28,000 gallon freeform, Stonescapes Tropics Blue Minipebble with abalone, 3.5' to 8.5' depth. 2 skimmers, 5 returns, dedicated vacuum port, Dolphin Z5 robot. All Pentair equip: EasyTouch 8, IC60 SWG, VS pump, 520 Cartridge Filter, 3 Intellibrites, 2 Color Cascade Bubblers. TurboTwister Slide and 8' Salt System Jump Board. TF-100. My Jan-Mar 2016 build:
    Waxahachie, TX Owner Build - A race to beat the baby!!

  2. Back To Top    #2

    In the Industry

    bdavis466's Avatar
    Join Date
    Aug 2014
    Location
    Riverside, CA
    Posts
    3,302

    Re: SampleSizer and using Taylor #9198 Test tube exclusively

    This came up yesterday in another THREAD.

    Sounds like Dave and OTP are going to look into it.
    -Brian-
    33K Pool/Spa, Pentair Equipment
    POOL BUILD
    Davis Custom Construction - Home Page

  3. Back To Top    #3
    JamieP's Avatar
    Join Date
    May 2011
    Location
    Waxahachie, TX (south of Dallas)
    Posts
    1,135

    Re: SampleSizer and using Taylor #9198 Test tube exclusively

    Quote Originally Posted by bdavis466 View Post
    This came up yesterday in another THREAD.

    Sounds like Dave and OTP are going to look into it.
    Thanks Brian. Dave made a good point at the end of that thread about repeatability, so therefore using the same tube consistently. I'll be interested in following that thread.
    28,000 gallon freeform, Stonescapes Tropics Blue Minipebble with abalone, 3.5' to 8.5' depth. 2 skimmers, 5 returns, dedicated vacuum port, Dolphin Z5 robot. All Pentair equip: EasyTouch 8, IC60 SWG, VS pump, 520 Cartridge Filter, 3 Intellibrites, 2 Color Cascade Bubblers. TurboTwister Slide and 8' Salt System Jump Board. TF-100. My Jan-Mar 2016 build:
    Waxahachie, TX Owner Build - A race to beat the baby!!

Posting Permissions

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