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. 2019 Mar 23;411(14):3037–3046. doi: 10.1007/s00216-019-01752-y

Fig. 2.

Fig. 2

Labeled photograph of modular pilot plant (a) for the continuous 2-nitrodiphenylamine synthesis. (b) Close-up example of tubular reactor (d, ID = 12.4 mm) and the filter section (e). (c) Photograph of the integrated compact NMR spectrometer (43 MHz) with ATEX certified pressurized housing for online concentration measurements. (f) indicates the location of the NIR flow cell