I don't know if I have a special kind of colorblindness or what, but I have a really tough time distinguishing between the colors on the borate and the PH tests. I can tell the difference between the two furthest extremes, but I cannot see the difference between close together colors, they look the same.
I get the basic idea of this test. If it is pink, it has less, when it starts turning just a little bit orange, you hit 50. So the idea is to hit 50. I don't think I am dark pink enough to be 0, I think I am closer to 30. But am I at 25, 35, or 45?