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I have a K-2106 which is of course fantastic but I'd like to have something for quick testing and so I'm not bombing thru my pH and Bromine reagents. Is a < $10 OTO test reliable or should I just look pickup some test strips at the local spa shop? Again, just to be clear, not looking to...

I'm usually a poster on Pool and Spa Forum but they seem to be having some issues... I see waterbear and chemgeek also contribute their amazing knowledge here Kit is a 2106 pH - 7.5 TA - 40 - 50 ppm (solution turns grey-ish on the 4th drop then red on the 5th) CH - 150 ppm Bromine - Typically...