Quote:
Originally Posted by Tapout
At higher temperatures more impurities are removed and the crystalline structure of the carbon fractures more creating more surface area. A peice of biochar the size of a pencil eraser has the surface area of a typical house. A piece of charcoal the same size does not.
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OK
Where do you get this grade of biochar to test.
All I can find is the homemade or hardwood charcoal or horticultural grade charcoal.