{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 each of the strips has {TAIL ~ 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 each of the strips has { TAIL ~ 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 OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL