I checked and double-checked - I even did the test twice getting the same results both times. The reagents have color coded lids and the hardness test described in the blue section of the directions uses the reagents with the blue color lids - the first one (Hardness INdicator) is a blue liquid - I put in 5 drops of that to start and swirl then add the other reagent (Hardness Titrant)which is clear one drop at a time. I was swirling the sample after every drop of the Hardness Titrant but the second time I would add 5 drops at a time and then swirl.

When I first put in the blue reagent, as it mixes in I see the blue strands turn red but it quickly disappears and the sample looks yellow. When I did this test using my tap water as a sample, the whole thing turned blue when I added the 5 drops of the first reagent.

I wonder if there is another chemical in the pool water that is reacting with the reagents and messing up the test.

At this point, I'm not too concerned about it so I will see what I get when the PS234 kit shows up.

Thanks for the help.

Peter