I have both Taylor ph test kits, the 44ml block used with R0004, and the small block used with R0014 reagent. I've noticed that I get different readings with each kit. The R0004 usually measures 0.2 higher than the R0014, sometimes more. In the pH test, 0.2 is a big difference. I realize there's a margin of error with these tests, but due to the consistency of these results I don't think that's what I'm seeing.
My reagents are about 6 months old and not expired yet. I even purchased a second bottle of each reagent thinking one of them must be bad, but I get the same results with the new reagents.
Has anyone else experienced this?
Here's a picture I took this morning from my tests. To my eyes (and my wife's) the 44ml/R0004 test is right at 7.8. The small/R0014 block is more like 7.6...it still has a peach tint to it, definitely not 7.8.
My reagents are about 6 months old and not expired yet. I even purchased a second bottle of each reagent thinking one of them must be bad, but I get the same results with the new reagents.
Has anyone else experienced this?
Here's a picture I took this morning from my tests. To my eyes (and my wife's) the 44ml/R0004 test is right at 7.8. The small/R0014 block is more like 7.6...it still has a peach tint to it, definitely not 7.8.