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Thread: Tester kit, how to use?

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    Tester kit, how to use?

    Hello Guys,

    I received my water based testing kit, the only test I'm having a bit of difficulty with is the CYA test. The test strips go off the chart when I tested the CYA and I understand they are pretty much useless but I expected my CYA test from the water based kit to indicate it being high too. Main reason is I've stupidly been using chlorine stabalized granules as my chlorine source and didn't realise this increases the CYA too, so with this assumption I expect the readings to be high. I'm going to refill the tub but before I done this I was waiting on my test kit to arrive (palintest 315c), so I could see the damage first.

    The CYA test has me put a tablet in a measured amount, its a 2 tube test, inner and outer, the instruction manual says "insert the square inner tube into the outer tube then, viewing from the top, move inner tube up/down until the black spot on the bottom is just no longer visible" in the solution. Now I'm stupidly asking, how accute must your view line be? as the solution is cloudly, the more acute, the more particles your vision has to penetrate to view the circle. The inner tube has a top on it, so I can't view directly down so I assume its from a very acute angle, i.e. just passed the top of centre, by definition, is this what "viewing the the top" means? I just wish to check this, as stupid as this question sounds, because the answer could change significantly based on my view.

    I tried twice and the black dot remained visible throught out (viewing angle, problably about 45 deg from top) so i assume this is a users intepretation problem, as I still assume the CYA is high, until I can get a confident test with the water based kit.

    Sorry again for the silly question...
    11000ish gallons, cartridge filter, IG (in ground), plaster, 1.5 hp pump, screen enclosure

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    In the Industry

    Join Date
    Jul 2009
    London and France

    Re: Tester kit, how to use?

    Remove the top from the square tube and look directly down to view the disapearing dot.

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Tester kit, how to use?

    As Teapot said, You have to look straight down through the column of water to interpret the test correctly.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Tester kit, how to use?

    doh, thanks guys, that makes more sense!
    11000ish gallons, cartridge filter, IG (in ground), plaster, 1.5 hp pump, screen enclosure

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