The L80/5000 water vapour permeability testers have been used successfully for decades in many laboratories. It is simple to use and with it's reliable testing principle and low maintenance makes it a cost effective choice. The Lyssy L80 can measure high permeability materials using special sample cards. It is extremely quick and the more permeable the sample the shorter the measuring time. In addition to it's short testing times and broad testing range, it offers a high degree of accuracy.