Vertex Aquaristik ROX 0.8 Activated Carbon 3500 ML Iodine Number: 1000min. Ball-Pan Hardness: 97min. Particle Size &lt;0.6mm, MASS-%: 0.5max. Iron (ACID EXTR.), MASS-%: 0.02max. Moisture (AS PACKED), MASS-%: 5max. PH: Neutral Food Chemicals Codex: Pass