I ran out of the Taylor Phenol Red reagent (R-0014) tonight so I broke out a new bottle. When I tested the pH with that I got a color that didn't match anything on the color comparator; it was a much lighter pink. It's clearly pink but light like the orangey/yellowy colors at the lower end of the pH scale. I ran the test a couple more times with identical results
My pH last night was 7.5 Free chlorine is 3.0 so that can't be having any affect. (Alkalinity is 50 ppm and calcium hardness is 260 ppm; not that those can be a factor here.)
The reagent was purchased this past spring as part of a refill kit from Ben.
Is this just a bad bottle of test reagent?
Thanks in advance for any help.
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