{HEAD ~ The collection container} may be filled with the material and separating {TAIL ~ the material} to form the selected fraction 
separating
{ HEAD ~ The collection container } may be filled with the material and separating { TAIL ~ the material } to form the selected fraction
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH