GC 4X8S granular activated carbon is ideal for most air purification purposes. Manufactured from selected grades of coconut shell, this product provides a superior level of hardness. Coconut shell carbons are cleaner than other carbons, and the life expectancy is longer, too. The high activity level makes them well suited for use in any kind of carbon filter or system. Aside from general air purification and deodorization, our coconut shell carbons are also very effective in solvent recovery applications.