Quote Originally Posted by vanhout
Yikes. What was he thinking?
With most test methods, there's no way to determine 44 ppm. OTO will be dark orange at that level; DPD tabs will be clear. So, he may have thought his chlorine was too LOW!


Quote Originally Posted by duraleigh
I forgot to add that that his pH was 7.2 the second time I tested for him (10 days after the 44 - FC.) I have no idea how that was possible.
The Taylor reagents are stabilized against chlorine, but not to 44 ppm. As far as I know, the only reliable method of testing pH, when the chlorine is that high, is a RECENTLY CALIBRATED pH meter.

Ben
"PoolDoc"