A permeability of 30,000 through 50,000 can be achieved in {HEAD ~ screening compartments} that include {TAIL ~ this material} 
A permeability of 30,000 through 50,000 can be achieved in { HEAD ~ screening compartments } that include { TAIL ~ this material }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL