Hilgenberg (Malsfeld, Germany) currently offer their remaining stock.
Clemens Zitat von James Holton <jmhol...@lbl.gov>:
Does anyone know the formula or supplier of what was once called "Lindemann glass"? It is a silicon-free high-boron glass that has no elements in it heavier than oxygen. Used to be used to make clear x-ray windows, but now I can't find anyone who sells it.-James Holton MAD Scientist
