Finding this to be the hardest part about testing chemicals with the tf100 kit. I have done the test over and over and am finding that what is considered obscured is pretty subjective. I took pics at 0, 45, 40, 35 and 30. Can someone tell me at which level the point is considered obscure for this test. I did not get the cheat sheet chemicals nor do I have time to wait on them. If someone experience could give me their input on these pictures l; I’d appreciate it. I also compared the picture to how it appears in real life and is accurate.