We also measured the thermal conductivity with the hot wire method and found 0.052 W/mK at 20°C with this two-dimensional method. It is claimed that this cellular glass is foamed with technical carbon. Therefore, we did a comparative test with Pinosklo and GLAPOR cellular glass at 500°C in air. The Pinosklo cellular glass became grey white while the GLAPOR cellular glass, foamed with glycerin remained black.
Cellular glass people, from the east or the west have really something in common.