I'm one of those individuals who has difficulty with some of the color comparison tests. With the ph test, I can't tell one color from the other with direct (or front) lighting. However, if I hold the test up a light source with a consistent background, then I'm better able to make the comparisons. Specifically, I've started holding the test up to my skylight with a blue sky in the background.
Does this technique impair the precision or accuracy of the test in any way?
Thank you in advance for the input!
Does this technique impair the precision or accuracy of the test in any way?
Thank you in advance for the input!
