Trouble testing CYA

[bonesmtb2]

I am having a hard time testing my CYA level. It still appears as though it is at zero, although it is kind of subjective as to when the cloudy water obscures the black dot at the bottom of the small tube. I have been adding stablizer a little bit at a time, but want to be careful not to overshoot.

I have this test kit:
http://www.lesliespool.com/Home/Pool-Chemicals/Water-Testing/Test-Kits/81330.html

Any suggestions? Am I doing this wrong or is there a better way to test your CYA level?

 

[Richard320]

That's the same test the TF100 uses, although I think the view tube is smaller.

Unfortunately, that's pretty much the standard for CYA tests. I find it useful to take a reading, pour it back, mix again, and take another reading. Usually at least 3 out of 5 match, and that's the number I use.

 

[bonesmtb2]

Ok, I will give that a try. When they say the black dot should disappear they mean that the water should be opaque enough that I don't see it at all right?

 

[wetchem]

Go here
extended-test-kit-directions-t25081.html

scroll down to cya

link there to site with examples.


-wc

 

[bonesmtb2]

Great thanks a lot. That link to the Taylor photos Jason posted was very helpful.

 

[lkae4]

That link was very helpful. I especially liked being able to see the bottom of the cya tube at the end of the test. Thanks for posting.

Nancy Figur