Fig. 11.1 The new robust laboratory converter designed by George Stern and used by
Mittasch for the examination of candidate catalysts. The auxiliary pressure tube is now
shown diagonally. Figure courtesy of the Nobel Foundation, Carl Bosch Nobel Lecture,
1931
1
Plate 11.2 The BASF version of the Haber Le Rossignol apparatus showing the new
converter in the centre (with a cooling jacket of iced-water), a drier to the right and the
cold regenerator to the left. Notice however the ‘Le Rossignol’ valves along the bottom
and how much more robust this apparatus now appears. Photograph courtesy of the
corporate archives, BASF
11 From Karlsruhe to Oppau
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