When using the TFTest Kit DPD drop test for CL, do you stop counting drops when the sample is PERFECTLY clear or almost?
Just about every time when I test, the sample will turn almost clear... sometimes there's a hint of pink hue, sometimes a purplish/bluish hue that is only noticeable when held up to the sun. And then one more drop makes it absolutely clear. It's a very subtle change on the last drop almost no change but it is a change.
So does that drop count or not?