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Table 5 Levels of selected factors for orthogonal experimental design

From: Strain screening and optimization of biohydrogen production by Enterobacter aerogenes EB-06 from glycerol fermentation

Level Factors
Cglycerol (g/L) [A] pH [B] C/N ratio [C]
1 5 5 5/2
2 10 6 5/3
3 15 7 5/4