Since I am now injecting a bleach solution with a pump I test every batch I mix up. Today I over-shot on the pumping rate so I decided to mix a weaker concentration. I put one 182 oz bottle of Clorox with two 182 oz bottles of pool water to make what I would have thought to be a ~2% solution. When I tested it ---- it was 3.2% ---- repeated the FAS-DPD test and got the same thing??????? ??????? I did not test the bleach before I mixed it.

My pool water was 7.3ppm but that's a long way from the 6% ?? bleach that it was mixed with.