Robustness
parameter

Coumarin

o-coumaric acid

Dihydrocoumarin

Syringaldehyde

T_f

RSD%

R_s

RSD%

T_f

RSD%

R_s

RSD%

T_f

RSD%

R_s

RSD%

T_f

RSD%

R_s

Methanol

29%

1.03

0.36

16.3

1.65

1.04

0.14

5.80

5.45

1.03

0.17

17.4

1.54

1.13

0.49

-

30%*

1.04

16.5

1.04

5.38

1.03

17.1

1.14

-

31%

1.04

16.9

1.04

5.23

1.03

16.9

1.14

-

Acetonitrile

4.9%

1.04

0.72

16.7

1.20

1.05

0.24

5.64

4.96

1.04

0.80

17.1

0.93

1.05

1.87

-

 5%*

1.05

16.4

1.05

5.31

1.04

16.8

1.08

-

5.1%

1.06

16.4

1.05

5.11

1.04

16.9

1.09

-

Formic Acid

0.9%

1.04

0.20

16.4

0.32

1.04

0.40

5.56

2.24

1.03

0.45

16.8

0.33

1.04

1.73

-

1%*

1.04

16.4

1.04

5.35

1.04

16.9

1.08

-

1.1%

1.04

16.3

1.03

5.35

1.04

16.9

1.06

-

Temperature

23°C

1.04

0.72

13.7

0.83

1.04

0.33

4.68

9.52

1.04

0.33

14.0

2.68

1.13

0.59

-

25°C*

1.05

13.7

1.04

4.32

1.04

14.2

1.12

-

27°C

1.06

13.9

1.04

3.88

1.03

14.7

1.12

-

Flow Rate

0.98 mL min^-1

1.13

0.45

13.5

0.19

1.10

0.51

4.25

0.47

1.16

0.25

13.5

0.19

1.16

0.25

-

1.0 mL min^-1

1.14

13.4

1.10

4.26

1.17

13.4

1.17

-

1.02 mL min^-1

1.15

13.5

1.11

4.29

1.17

13.5

1.17

-