- AERO-CLEAN Coco-Granular quickly removes toxins and odours from the air and ensures clean and healthy air. A pH value of 9-11 prevents rust formation on bare metal surfaces. - Ideal for air purification and the production of ultra-pure air. The iodine value is >1050 mg/g, the specific surface area (BET) is approx. 1100 m²/g and the ash content is max. 5%.