Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 m²/g. The key raw material of activated alumina is calcined alumina. As an adsorbent, activated alumina is most well-known for its use in water filtration applications, where it serves as a cost-effective adsorbent for removing fluoride from water. It is also capable of removing a variety of other contaminants, including arsenic, lead, and sulfur. PT GRAINS INDONESIA provide high quality activated alumina products ranging depending on the purpose of use to satisfy diverse customer requirements.