The Sumifix HF series, with excellent wash-off property, rationalizes the washing process.

	Washing process	Cotton-staining by washing
High-temperature type reactive dye	RinsingHot rinsing Soaping Hot rinsing Rinsing	3
	Rinsing Hot rinsing Soaping Hot rinsing Hot rinsing Hot rinsing Rinsing	4-5
Sumifix HF	Rinsing Hot rinsing Soaping Hot rinsing Rinsing	4-5

Washing process can be shortened

Cost advantages in energy and water use by shorter washing process

Wash-off property of Sumifix HF dyes and others

Washing condition
Liquor ratio 1:20
Cold rinsing, 5 minHot rinsing, 70°C x 5 minSoaping, 95°C x 5 minHot rinsing, 70°C x 5 minCold rinsing, 5 min

Relation between washing process and washing fastness

Washing process	Dyes	Washing JIS A-4 Cotton-staining (after fixing)
Rinsing Hot rinsing Soaping Hot rinsing Rinsing	Sumifix HF	4-5
	Company A	3-4
	Company B	3
Rinsing Hot rinsing Soaping Rinsing	Sumifix HF	4
	Company A	3
	Company B	2-3
Rinsing Hot rinsing Soaping Hot rinsing Hot rinsing Rinsing	Company A	4
Rinsing Hot rinsing Soaping Hot rinsing Hot rinsing Hot rinsing Rinsing	Company B	4

Hot rinsing process can be reduced considerably

Quick washing with Sumifix HF dyes

(Washing test: JIS A-4, cotton-staining: higher than grade-4, substrate: dyed and fixed at less than 2/1 standard depth)
Rinsing Hot rinsing Soaping Rinsing

Advantages to the use of Sumifix HF dyes