We received some samples from Pinosklo, Ukraine, a company we already discussed on this site. The picture shows uncovered foamed glass, bitumen coated and mineral coated cellular glass.

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.