Very informative post! Very glad you posted this. However I have a couple questions about the info.
First, when I test the spinach that I eat, it's REALLY hard to tell where the line is period, and just about the entire meter is slightly shaded green (even above where the line would be). It 'seems' like the line is right around 6 brix but it's SO fuzzy that it's hard to tell. Is this suppose to happen?
Second, is it safe to say that it's better to eat something with a fuzzy line and low brix for the type of produce it is, rather than eating something with a higher brix with a very sharp defined line? If you had to make that choice..