Different Color Fastness to Washing Test Standards and Corresponding Test Requirements

 

In this article， we will share with you different color fastness to washing test standards and color fastness to washing test methods, as well as test requirements.

Purpose of the color fastness to washing test

To assess any color change or staining that may occur in textiles during the washing process.

Principle of color fastness to washing

The color change and staining of the lining of a specimen were tested under appropriate conditions of temperature, detergent, bleaching, and friction.

Test Methods

(i) AATCC 61-2010

(ii) M&S C4 A-2007

(iii) JIS L 0844 :2011 A-2

(iv) GB 3921-2008

(v) ISO 105 C06:2010 (E)

 

Configuration of Washing Solution for Color Fastness Test

(i) AATCC 61-2010 2A-5A 1.5g/L AATCC 1993 standard detergent (WOB)

or 2003 AATCC standard liquid detergent (with or without fluorescent whitener) 0.23%

(ii) ISO105 C06:2010(E) B2S 4gECE+1g sodium perborate dissolved in 1L of 50℃ water

(iii) JIS L 0844:2011 A-2  5g/L soap dissolved in 50℃ distilled water

(iv) GB 3921-2008 C3 5g soap flakes + 2g anhydrous sodium carbonate dissolved in 1L 25 ± 5 ℃ tertiary water, stirred with a stirrer for 10 ± 1 minutes

(v) M&S C4A-2007 4g of ECE + 1g of sodium perborate dissolved in 1L of 50°C water

 

 Equipment & Material  for Color Fastness Test

Colorfastness to washing tester or washing fastness tester (temperature can be controlled), speed 40±2 r/min

Stainless steel sealed test cup and capacity:

AATCC 61A  ISO  JIS  GB  MS  550±50ml

AATCC 612A-5A                 1200ml

 

Preparation of Combined Specimens

ISO 105 C06, MS C4A: 40*100mm specimen with 40*100mm DW multi-fiber lining sewn along the short edge

AATCC 61-2A, 3A: 50*150mm specimen with 50*50mm NO.10 multi-fiber lining sewn along the short edge

GB/T 3921.3: 40*100mm specimen with 40*100mm cotton lining + viscose lining sewn along the short edge

JIS LO844 A-2: 40*100mm specimen with 40*50mm cotton interlining+silk interlining sewn along the short side folded along the fold line

 

Use of Interlining for Color Fastness Test

AATCC method: uses NO.10# multifiber interlining with a strip width of 8mm.

ISO, MS method: with DW-type multi-fiber lining, strip width 15mm.

GB method: Cotton + wool for cotton fabrics (C3 60-degree cotton + viscose for washing resistance method).

The sample is silk fabric lined with cotton and silk.

Sample for T / C, CVC, 49, and other polyester fabrics containing varieties of lining for cotton + polyester.

The rest of the special components with DW-type multi-fiber instead.

JIS method: sample for cotton fabrics lining for cotton + silk or cotton + wool

Sample for silk fabrics lining for cotton + silk

The sample is lined with cotton + polyester for T/C, CVC, 49, and other polyester-containing fabrics.

Special situation uses multi-fiber interwoven fabric 1#

UNIQLO customers use cotton + nylon lining.

 

Test Procedure of Color Fastness Test

Place the steel cups symmetrically and with a symmetrical center of gravity

Adjust the temperature of the colorfastness to the washing test machine to reach the required set temperature.

Select the appropriate test cup, the number of balls to be added and the soap solution to be preheated, and then preheat for at least 2 minutes, MS standard requires 5 minutes of preheating and symmetrical placement.

Place the specimen and soap into the preheated steel test cup according to the requirements or bath ratio.

(Check the test stainless steel cup for leaks before preheating)

 

Commonly Used Washing Parameters for Colorfastness to Washing

Test Methods	Amount of Washing Liquid (ml)	Temperature of Water Bath (℃)	Washing Time (min)
AATCC 61-2010 2A	150	49	45
AATCC 61-2010 3A	50	71	45
ISO 105C06: 2010(E)B2S	150	50	30
JIS L0844:2011 A-2	100	50	30
GB 3921-2008 C3	50:1	60	30
M&S C4A-2007	50:1	50	30

 

AATCC 61-2010 Test Methods and Test Condition Parameters

Test Methods	Temp.(℃)	Amount of Washing Liquid (ml)	Solid Detergents %	Liquid Detergents%	Active Chlorine %	Number of steel balls (pcs)	Time   (min)
1A	40	200	0.37	0.56	none	10	45
2A	49	150	0.15	0.23	none	50	45
3A	71	50	0.15	0.23	none	100	45
4A	71	50	0.15	0.23	0.015	100	45
5A	49	150	0.15	0.23	0.027	50	45
1B	31	150	0.37	0.56	none	10	20

 

GB/T 3921-2008 Test Methods and Test Condition Parameters

Test Methods	Test Reagents（g/l）		Test Condition
	Synthetic Detergent	Anhydrous Sodium Carbonate	Temp.( ℃)	Time (min)	Steel Balls （pcs）
A（1）	5		40	30
B（2）	5		50	45
C(3)	5	2	60	30
D(4)	5	2	95	30	10
E(5)	5	2	95	4H	10

 

ISO 105-C06：2010 Test Methods and Test Condition Parameters

Test Methods	Temp.(℃)	Amount of Washing Liquid (ml)	Sodium Perborate （g/l）	Time（min）	Steel Balls （pcs）	Categorization
A1S	40	150		30	10	Method A
A1M	40	150		45	10	Method B
A2S	40	150	1	30	10
B1S	50	150		30	25	Method C
B1M	50	150		45	50	Method D
B2S	50	150	1	30	25
C1S	60	50		30	25
	60	50		45	50
	60	50	1	30	25
C1M	70	50		30	25
C2S	70	50		45	100
D2S	70	50	1	30	25
D3S	70	50		30	25
D3M	70	50		45	100
E1S	95	50		30	25
E2S	95	50	1	30	25

 

JIS L 0844: 2011 Test Methods

categorization	Test Method and Specific Classification Number	Detergent
Method A	A-1/A-2/A-3/A-4/A-5/A-6/A-7	Soap
Method B	B-1/B-2/B-3/B-4/B-5/B-6/B-7/B-8 B-9/B-10/B-11/B-12/B-13/B-14/B-15/B-16	Synthetic Detergent No.1 Or Synthetic Detergent No.2
Method C	C-1/C-2/C-3/C-4	Synthetic Detergent No.3
Method D	/	Synthetic Detergent No.3

 

Cleaning Method after the Color Fastness Test

1. AATCC 61: The specimen and soap solution are poured into a beaker, and each specimen is placed in a separate beaker, with

40 ± ℃ 3 distilled water stirring or hand-squeezed rinsing 3 times, each time the cleaning should be kept for 1min each time, remove excess water (suction drying, Centrifugal dehydration or squeezed)

 

2.IS0105 C06: Put 100ml 40 ± 2 ℃ distilled water in two beakers each, then rinse the composite specimen 2 times, (each rinse for 1min), to remove excess water.

 

3. GB/T3921:At the end of the test, take out the specimen with distilled water to clean 2 times and then clean with tap water, squeeze out the water.

Squeeze out the water.

 

4.JISL0844: After the completion of the test, take out the specimen, with 100ml 25 ± 2 ℃ water cleaning for 1min, and wash it 2 times.

5.M & S C4A: At the end of the test, pour the washing solution into the beaker. Pay attention to the washing solution staining, and record it according to the “slight” “moderate” and “serious” situation; The two 2L beakers were filled with 2 liters of distilled water and tap water. The distilled water first and tap water Then agitate the specimen with a glass rod for 1 minute and squeeze out the excess water.

 

Drying Method after the Color Fastness Test

1. AATCC 61:Dry the specimen in an oven at a temperature not exceeding 71°C or natural drying in air. Equilibrate for 1 hour at a temperature of 21±1°C and a humidity of 65±2%. Trim the test specimen and fiber liner, remove loose fibers, and try to retain the largest scale of test specimen.

 

2. ISO 105 CO6:Separate the test specimen and multi-fiber lining, only in contact with the seam line, at a temperature of not more than 60 ℃ under the condition of air drying.

 

3. GB / T 3921:Expand the specimen, hanging in the air at a temperature not exceeding 60 ℃ to

 

4. JIS LO844:Dry the specimen in the oven at 60 ℃ or less, then cool it after the drying or continue to dry in the air.

 

5. MS C4A: In the case that specimens and compound fiber are stitched, ensure the specimen and multi-fiber lining are flat spread, then dry them at a temperature of not more than 60 ℃ under the conditions of a screen drying tray.

At last, you can get the color fastness to washing test results from the comparison with Grey Card.

For more information on textile testing methods/standards
or the quotation of color fastness to washing tester, contact us:
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