Table 2

UPF values, protection class and K/S values of plain weave fabric dyed with natural colorants at different concentrations

Colorant

UPF

UV Protection Class

K/S


Plain weave

2% Madder

11.1

No Class

0.20

4% Madder

15.8

Good

0.28

6% Madder

16.6

Good

0.38

2% Cochineal

28.5

Very Good

0.63

4% Cochineal

34

Very Good

0.79

6% Cochineal

36.6

Very Good

0.99

2% Indigo

43.1

Excellent

1.78

4% Indigo

> 50

Excellent

2.56

6% Indigo

> 50

Excellent

3.02


Sarkar BMC Dermatology 2004 4:15   doi:10.1186/1471-5945-4-15

Open Data