So I just did a TA test on my TF-100 kit and when I put in the R-008 it turned red instead of green. Thinking I messed up somehow I did it again and same thing. Does this mean my TA is actually 0?
Not to ask dumb questions but are you rinsing out the test vials between tests? Are you adding the correct reagents in the correct order for the test (2 drops of R-0007, 5 drops of R-0008 indicator then titrate with R-0009)?
Are you sure your pH is in the 7's then?
I actually put in 64oz of baking soda before I saw your post, it's now reading 120. Doesn't make sense coming from 0, but if it was actually around the 90 I measured last month the addition is spot on (according to poolcalculator anyway). Not sure what the problem was with the testing before though, kind of wish I had saw your post ahead of time for further debugging. If this happens again at some point i'll try that. Also, maybe i'll get time this weekend to run to a pool store and get a test to see how the two compare