Fig. 4-2-3-1 Prototype 2,500 cm2, 5-cell stack electrolyzer
and evaluation testing equipment

Fig. 4-2-3-2 Measurement results for electrolytic properties of 2,500 cm²,
5-cell stack electrolyzer

Fig. 4-2-3-3 The high temprature, high pressure stack electrolyzer

Fig. 4-2-3-4 Measurement of electrolytic properties of the high temperature,
high pressure stack electrolyzer