div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: Home Queens University€¦ · Q-Sun Test Chamber 110 Wm2 420 nm 250 Hours Light aging Before exposure Light aging 250 h exposure with glazing Light aging 250 h exposure src=https:reader031vdocumentsnetreader031viewer20220119055f272c80d1520d3669563c21html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv