| http://www.w3.org/ns/prov#value | - In addition to the oxygen content of the gas atmosphere, the composition of the respective glass and the processing conditions during the manufacture of the glass object, such as temperature, time and gaspressure, also play an essential role.The oxygen content of the gas atmosphere is set and regulated in a range of 0 to 100 vol. % and within the range percentages in tenth of percent steps such th
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