Granular Activated Carbon Products range from the size 0.2mm to 3.75mm. Granular Activated Carbon has relatively larger particles size compared to powdered activated carbon and consequently, presents a smaller external surface. Powdered Activated Carbon Powdered Activated Carbons are small activated carbon particles, with a size that is predominantly less than 0.075 mm. Pelletized Activated Carbon Pelletized form are activated carbon compressed into formed cylinders, and have wide variety of uses removing contaminants such a volatile organic compounds (VOC's) and mercury from natural gas as well as controlling odor.