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. 2007 May 23;2(5):e456. doi: 10.1371/journal.pone.0000456

Figure 5. The hydrogen cell system configured for monitoring H2 with the ORNL in-house sensor based on the Figaro TGS 822 and O2 with a modified Hersh galvanic cell [43].

Figure 5

The CO2 analyzer (not shown) is attached between the reaction cell and the electrolysis cell.