This outer wound carbon cartridge features layers of paper impregnated with activated powdered carbon with a very low sulfur content. It has the same characteristics as the style GC which also provides three filters in one. The outer winding acts as a pre-filter, the carbon impregnated paper removes the organic contaminants as well as undesirable tastes, odors, sediment, and discoloration and finally, a polishing 5 micron inner winding. There is a choice of polypropylene, FDA polypropylene or bleached cotton for the wound material and the core material can be either polypropylene or stainless steel.