{HEAD ~ Magnesium halide} supported on {TAIL ~ an activated carbon} prepared under vacuum will remove water at 1 to 500 ppm 
{ HEAD ~ Magnesium halide } supported on { TAIL ~ an activated carbon } prepared under vacuum will remove water at 1 to 500 ppm
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH