Reference solution

Lower butyric acid conc.

Lower acetone conc.

Lower ethanol conc.

Butyric acid (g/L)

7.47 ± 0.23

3.30 ± 0.14

6.98 ± 0.22

6.79 ± 0.21

Acetone (g/L)

13.83 ± 0.28

13.64 ± 0.28

10.74 ± 0.25

13.45 ± 0.31

Ethanol (g/L)

12.61 ± 0.11

12.87 ± 0.11

12.91 ± 0.11

8.30 ± 0.07