- Only Indigo Dye is used to dye the yarn in different concentration.
- Only Sulphur Dyes are used to dye the yarn in different concentration.
- SBIT – Sulphur Bottoming Indigo Topping
IBST – Indigo Bottoming Sulphur Topping
Sulphur Black is used in very low concentration.
Indigo & Sulphur color is arranged in a form of sandwich.