In former days, batch compositions and their preparation were considered to be a closely guarded secret by each glass maker. The compositions used were based on the experience of generations and were often accomplished with a little bit of alchemy. Money was available in those days to buy very clean and consistent raw materials and people did not know and did not care about environmental pollution.
Origin
Futronic Gmbh, Germany
Journal Title
Int Glass Rev Autumn/Winter 1996 54-56
Sector
General
Class
G 1551