• As the desiccant absorbs moisture, a dramatic and high visible color change from dark blue to light pink is evident.
• The color change works it’s way through the desiccant as the absorptive qualities of the desiccant are diminished.
• Once the color change is visible through the exclusive sight dome, the full desiccant bed has reached its maximum drying capacity and should be either changed or regenerated.

Motor Guard M-4095-G Desiccant Air Dryer Silica Gel Color Change Gallon