Apply the updated kamman charcoal surface to steam at 120° c hydration. 3 hours left in the cold, moisture and weight scale, then put the water into the coal, water absorption, kamman noted weighed after absorbing water.
The activated carbon of surface patches and then baked dehydrate at 120 C for 3ชั่วโมง. Leave to cool in the jar to absorb moisture. And weighed. Then put water in activated carbon adsorption water observation