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Fir Type for Acid dyes Firat series Fir three-primary color series Firsol Type for Reactive dyes for wool Direct dyes
Fir three-primary color series
Product name Sample of dyed fabrics Sunlight Soaping (50°C) Water immerse Acid sweat Alkaline sweat Rub
Color change Nylon stain Cotton stain Color change Nylon stain Cotton stain Color change Nylon stain Cotton stain Color change Nylon stain Cotton stain dry wet
Fir light color E series
Acid red E-1   5 3 2-3 3 4-5 2-3 3-4 4-5 2-3 3-4 4 2 3 4-5 4
Acid Yellow E-1   6-7 2-3 4-5 3-4 4 2 3-4 4 2-3 3-4 4 2-3 2-3 4-5 4
Acid blue E-1   6-7 2-3 2 3-4 4-5 1-2 3-4 4-5 2 4 4-5 1-2 3 4-5 4-5
Fir medium color M series
Acid red M-1   5-6 4 3-4 4 4-5 3 4-5 4-5 3-4 4-5 4-5 2-3 4 4-5 4
Acid Yellow M-1   4-5 4-5 4-5 4-5 4-5 2-3 3-4 4-5 2 3-4 4-5 2-3 2-3 4 4
Acid blue M-1   6 4 4 4-5 4-5 3-4 4-5 4-5 3-4 4-5 4-5 3 4 4-5 4-5
Fir deep color S series
Acid red S-1   6 4 4-5 4-5 4-5 4 4-5 4-5 4 4-5 4-5 3 4 4-5 4
Acid red S-2   6-7 4 4 - - - - - - - 5 - - 4-5 4-5
Acid Yellow S-1   7 4-5 4-5 4-5 4-5 4-5 4-5 4-5 4-5 4-5 4 4-5 4-5 4-5 4-5
Acid blue S-1   6 4 4-5 - - - - - - - 4-5 - - 4 -
Acid black S-1   - - - - - - - - - - - - - - -
Note: reference only
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