Single Bin LEDs are all the same color shade. When LEDs are manufactured, they all do not have the same brightness and color shade. Calibration adjusts the brightness of the different LEDs, but it cannot adjust the variance in color shade distribution within each of the red, green and blue LEDs.
Because of the wide range in color shades in each color, it is very difficult for a LED Digital Billboard that requires factory calibration to produce a good white on the face of the LED screen. How often do you look at a LED Digital billboard and ask yourself, "Shouldn't that color be white?"
Because of Formetco's single bin LEDs, the Formetco FTX produces a true white, and with a true white your other colors will look better.