A plastic contact material is disclosed for the treatment of a liquid, comprising a plurality of {HEAD ~ strips} made of {TAIL ~ a plastic material} and wherein each of the strips has at least one tension element 
made of
A plastic contact material is disclosed for the treatment of a liquid , comprising a plurality of { HEAD ~ strips } made of { TAIL ~ a plastic material } and wherein each of the strips has at least one tension element
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH