A device for the quantitative analysis of debris 1, wherein said conveyor belt is provided with {HEAD ~ containment sidewalls} , integral thereto and placed on both sides along their whole length, and defines an upper or debris collection surface and {TAIL ~ a lower surface} 
A device for the quantitative analysis of debris 1 , wherein said conveyor belt is provided with { HEAD ~ containment sidewalls } , integral thereto and placed on both sides along their whole length , and defines an upper or debris collection surface and { TAIL ~ a lower surface }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL