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

Thread: Is my testing method OK?

  1. Back To Top    #1
    Jordy Verrill's Avatar
    Join Date
    May 2016
    Location
    Cincinnati, Oh
    Posts
    26

    Is my testing method OK?

    So this might be a silly question, but it will help settle my anxiety/OCD. The way I test my water is by filling a plastic cup, which is and always has been used solely for testing water and never used to drink from or washed or anything like that, from about a foot below the surface of the water, then bringing the cup inside to do my testing. Is the water sitting in the cup, then going into the testing tube going to affect my numbers at all as opposed to just directly filling the tube from he pool?

    Like I said, probably a silly question. Just wondering if anyone else does something like this or if the experts here think this is fine.
    16x32, In Ground, ~20,000 gallons, Vinyl
    1hp Hayward Pump, Hayward s200 Sand Filter, Raypack Heater (rarely used)
    Taylor K-2006 test kit

  2. Back To Top    #2

    In the Industry
    OTPirate's Avatar
    Join Date
    Oct 2013
    Location
    Creedmoor, NC
    Posts
    813

    Re: Is my testing method OK?

    Eh, likely not. But, the cup may have some residual chemicals on it from the previous time you tested. Make sure you rinse it in between testing. Personally, I test by scooping water into whatever vessel I'm using to perform that test with, whether it be a cylinder or comparator.

  3. Back To Top    #3
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    8,848

    Re: Is my testing method OK?

    Not sitting for any longer than it takes to warm to room temperature.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  4. Back To Top    #4
    Mod Squad Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    14,998

    Re: Is my testing method OK?

    This is perfectly fine. Run your pH and FC right away, and you'll be good. That goes for no matter what you get the sample in. Its always just good practice. In a lab setting you would also always rinse your sample cup, and vial three times with the test sample first, and between different sample tests using the same vials. It takes only a little bit of sample to thoroughly rinse each time. If you want to do it right, that's the way. Rinsing your glassware with distilled water after you're all through is also good practice.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  5. Back To Top    #5
    Mod Squad Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    14,998

    Re: Is my testing method OK?

    You might also consider getting a squirt bottle to take your sample from the pool in. It's very handy, and makes filling the vials very easy. Again, triple rinse the bottle with sample you grab each and every time.

    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  6. Back To Top    #6

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    29,885

    Re: Is my testing method OK?

    That squirt bottle Patrick is talking about is the cat's pajamas.

    Scoop up a sample about a foot deep or so like you said, then take it inside and perform your tests.

    We are not doing Universe altering research here so don't overthink it.....we're just pool nerds (good ones, though)
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  7. Back To Top    #7
    Jordy Verrill's Avatar
    Join Date
    May 2016
    Location
    Cincinnati, Oh
    Posts
    26

    Re: Is my testing method OK?

    I always rinse my my cup with water from the pool and then rinse my test vial with water from the cup before I do tests, and test right away, so I guess I'm good to go. Those squirt bottles look nice though... I might have to invest in one of those.
    16x32, In Ground, ~20,000 gallons, Vinyl
    1hp Hayward Pump, Hayward s200 Sand Filter, Raypack Heater (rarely used)
    Taylor K-2006 test kit

  8. Back To Top    #8
    Mod Squad Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    14,998

    Re: Is my testing method OK?

    Those type can be found as "wash bottles." (Unitary) Nalgene is the best.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  9. Back To Top    #9
    Sfpat's Avatar
    Join Date
    Jul 2016
    Location
    tulsa
    Posts
    95

    Re: Is my testing method OK?

    The squirt bottle is probably the best thing I ever got from Leslie's
    40 year old pool, 35k gal w/spa, gunite replastered July 2016, Hayward Sand filter, Hayward 1.5 hp single speed pump, TF-100, Kreepy Krauly suction side cleaner

Posting Permissions

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