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