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Thread: CYA 50ppm Standard Solution Questions

  1. Back To Top    #1

    Join Date
    May 2015
    Centerville, MN

    CYA 50ppm Standard Solution Questions

    I have a very hard time with the CYA test. The only way I have any confidence in my test is if I mix a reference solution using the CYA 50ppm Standard Solution for comparison. I have a few questions:

    1) Does CYA 50ppm Standard Solution sold by expire? If yes, about how long should it last?

    2) Can a Standard CYA Test Sample be mixed (CYA Standard + CYA Reagent) and kept for the season for quick reference/calibration?

    Thanks, Jim.
    My Pool: Installed 2012, 15K gal AG Vinyl Tuff Pool, Pentair CC150 Cartridge Filter w 1.5 HP Pump, Mastertemp 200 Heater, MineralSprings MS-20 SWG, Smartpool NC22 Cleaner
    Testing: TF-100 Test Kit, SpeedStir, AquaCheck Salt Test Strips, LaMatte Borate Test Strips, CYA 50ppm Standard Solution

  2. Back To Top    #2

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: CYA 50ppm Standard Solution Questions

    Welcome to the forum.

    There is no expiration date but I would lose faith after a couple of years.

    I doubt you can expect the mix to last but frankly, I do not know......never had a reason to do that.

    The CYA test will get easier and easier for you. Remember about the closest you will get is plus or minus 10 ppm.....better as you get more used to the test.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: CYA 50ppm Standard Solution Questions

    Good, now that the authority has spoken...

    I found that standard solution to be very handy. When I tried it, I discovered I was testing right. It's a good-sized bottle, so I had plenty to share and used it to teach someone else how to do the test. You just play around with where to stand in your yard, how far away to hold it, everything that affects the test until you see the dot disappear at 50. And that's exactly what you do when you test a real sample.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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