Aireox Model 45-B Replacement Filters

Bituminous carbon is a coal based carbon. It is black or dark brown, often with well-defined bands of bright and dull material. It has a lower micropore volume level but the mesopores and macropores are higher which means it has a wider range to absorb molecules from small to medium making the life of the carbon shorter.  It is also used by our customers who may have a sensitivity to Coconut shell carbon. A macropore has a diameter of more than 50 nm - A mesopore has a diameter of 2nm - 50nm and a micropore has a diameter of less than 2 nm.

Coconut shell carbon comes from high quality coconut and is more environmentally friendly or green.  The coconut tree produces coconuts three times a year and the tree is not killed to harvest the coconut shells; therefore they are a renewable resource.The coconut shell activated carbon has a higher micropore volume but less mesopores and macropores which means, it has a much higher capacity to absorb small molecules such as volatile organic chemicals (VOC). A macropore has a diameter of more than 50 nm - A mesopore has a diameter of 2 nm - 50 nm and a micropore has a diameter of less than 2 nm.