It may further be used as {TAIL ~ a support material} in chromatographic materials or {HEAD ~ catalytically active materials} 
It may further be used as { TAIL ~ a support material } in chromatographic materials or { HEAD ~ catalytically active materials }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD