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Internal architecture of the VOC analyzer. (A) Carrier gas generation pump, (B) sample pump, (C) detector module, (D) GC column oven assembly, (E) injector module with pre-concentrator and cooling fan, (F) microprocessor control board, (G) internal battery, (H) sample inlet, (I) Raspberry Pi 4 computer, (J) 7″ 720P LED touchscreen.
