Specification of Adsorbent coconut based Granular Activated Carbon Specification Units IRIPL Iodine Value (mg/g) ± 30 1000 Apparent Density(mg/m3) ± 25 560 CTC adsorption % ± 70 Hardness % 98.8 Ash % 4 PH -- 8-10 Alkaline Moisture % 4 Sieve Size -- 8x30 Specification of Coal base Granular Activated Carbon Specification Units IRIPL. Iodine Value (mg/g) 600 Apparent Density (g/L) ± 10 500 CTC adsorption % ± Hardness % 90 Ash % 15 PH -- Above 8 Sieve Size 4x8. 25 Kg's and 50 Kg's in HDPP Bags.