Activated Alumina for dryer is available in 1/8-inch, 3/16-inch and 1/4-inch bead sizes.Dew points to -40°F and lower may be achieved with Activated Alumina Desiccant depending on the compressed air dryer design and operating conditions. 3-5mm and 4-6mm Activated Alumina bead is the size most used in regenerative dryers. Activated Alumina is highly porous with a large surface area, which will not weaken or break when subjected to high liquid concentrations. High crush strength and strong, durable shipping bags, allow for easy transport.
2-4mm activated alumina is common size.