Granular Activated Carbon

Activated carbon may be manufactured from Coal, Wood, Peat or Coconut Shell. It is commonly used to adsorb natural organic compounds, taste and odour compounds, and synthetic organic chemicals in drinking water treatment.

It is an effective adsorbent because it is a highly porous material and provides a large surface area to which contaminants may adsorb. Its level of activation is measured by its Iodine number. This describes the quantity of small and large pore volumes in a sample of the Carbon.

The higher the number the more activated and effective it is. Irwins most popular Granular Activated Carbon is L900, with a 900 Iodine number. This is a coal based carbon. Other variants on this can be supplied but might not be available ex-stock.