Concentration indicates the amount of super abrasive (Diamond or CBN) particles contained in the abrasive layer. It is an index that shows how much the number of "cutting edge" is.
Concentration 100 indicates that the volume ratio of diamond (CBN) in the abrasive layer is 25%, concentration 100 is 4.4 carats (0.88 g) of abrasive per cubic centimeter.
Amount of different concentration
Diagram of different concentration
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