I found that 'ash content' and 'iodine number' usually mentioned in the activated carbon product specification. One source mentioned that iodine number is a measurement of activity level (higher number indicates higher degree of activation). Contrary with ash content, ash can reduce the overall activity of activated carbon so higher ash content means lower activated carbon activity.
My question is : If an analysis of an activated carbon product shows that it has a certain iodine number, has the activity represented by the iodine number covered the activity decrease caused by the existence of ash? In example, between two different activated carbon, A and B, A has a higher iodine number than B, but A also has a higher ash number than B. In case if we want to choose activated carbon which has the highest activity, should we consider both parameter (ash content and iodine number) or the iodine number has covered all?
Thank you in advance and best regards