Is there a more accurate way to test cya? I really struggle with the cya test. I can get big range in the test with my Taylor test kit. I make sure I mix for 30 seconds, have my back to the sun, I am holding it at my waist, glance away to insure my eyes are not seeing an imaginary dot. I can get different reading wheel using the same solution and I reshake it before retesting. I get a range from 40-60. Are the pool store tests more reliable for cya?
Is there a more accurate cya test than the Taylor kit?
- Thread starter ramirez41
- Start date
- May 3, 2014
- 62,752
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
- Jun 24, 2021
- 16,592
- Pool Size
- 29000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-60 Plus
- May 23, 2015
- 25,753
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Yes … if you’re willing to pay hundreds of dollars for a digital photometer along with all the calibration standards and extra hardware needed … and then have it factory recalibrated every year or so.
So … practically speaking … no.
So … practically speaking … no.
- Jul 21, 2013
- 65,789
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
You don’t need a very accurate CYA level. +/- 10 ppm is fine and then round up.
- Dec 13, 2020
- 914
- Pool Size
- 19600
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 1400
As @mknauss has pointed out before, accuracy isn't a huge deal. 40 or 60 means target FC is 5-7 or 7-9, and the absolute min, where you'd be in danger of algae, is 3. So shoot for 7. All good. nb: you should "invert the bottle repeatedly," not shake it hard. I guess that could add air. For fun you can order a standard CYA=50 solution from TF Testkits and practice.