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