Mordant

(FeSO₄)

Pre-mordanting

Meta-mordanting

Post-mordanting

K/S

L*

a*

b*

K/S

L*

a*

b*

K/S

L*

a*

b*

1 mL

0.78

−0.76

−0.58

−2.51

0.56

−0.72

−0.54

−2.49

0.76

−0.74

−0.56

−2.50

1.5 mL

2.86

−0.38

−0.83

−0.64

2.57

−0.35

−0.80

−0.60

2.78

−0.37

−0.82

−0.62

2 mL

4.68

−0.69

0.04

3.65

3.67

−0.66

0.02

3.60

3.80

−0.68

0.03

3.62

2.5 mL

5.00

1.13

−3.90

−7.42

4.0

1.10

−3.87

−7.39

4.40

1.12

−3.89

−7.41

3 mL

4.23

2.41

−3.88

−9.82

3.25

2.39

−3.82

−9.80

3.56

2.40

−3.85

−9.81

3.5 mL

2.91

1.25

−3.83

−7.83

2.23

1.22

−3.78

−7.80

2.43

1.23

−3.80

−7.82