BS EN ISO 105-C12:2024
Textiles. Tests for colour fastness - Colour fastness to industrial laundering

Standard No.

BS EN ISO 105-C12:2024

Release Date

2024

Published By

British Standards Institution (BSI)  GB  /  BSI

Latest

BS EN ISO 105-C12:2024

Introduction

Analysis of the core content of the standard

BS EN ISO 105-C12:2024 is an alternative version of ISO 105-C12:2006. It adds sodium percarbonate as an optional reagent and adjusts the pH control range. The standard is applicable to the color fastness evaluation of various textiles processed by equipment such as industrial washing machines.

---

Comparison of test methods

Test number	Temperature control	pH range	Bleach type	Applicable scenarios
1S	92±2℃	12.0-12.5	None	Workwear evaluation
2S	75±2℃	12.0-12.5	None	Bedding/tablecloth
1P	75±2℃	11.0-11.5	Hydrogen peroxide	Colored decorative white workwear
2P	75±2℃	10.0-10.5	Sodium perborate+TAED	Colored decorative white workwear

---

Key Technology Updates

Main revisions to the 2024 version include:

• Added Sodium percarbonate as a substitute for sodium perborate (Clause 5.6)
• Specified that 30% is the mass fraction of hydrogen peroxide (Clause 5.3)
• Adjust the size of multi-fiber interlining fabric to 80mm×100mm (Clause 7.2)
• Change the original Appendix A from informative to normative

Actual application case: After a workwear fabric was tested using the 2P test procedure, the color difference reached level 4 after 5 cycles of testing, meeting the requirements for multiple industrial washing of hospital uniforms.

---

Implementation recommendations

1. Before testing, the sample must be weighed with a balance with an accuracy of 0.01g (Clause 6.5)
2. The detergent must be prepared and used immediately, and the hydrogen peroxide should be used immediately after addition (Clause 8.1.2)
3. Before evaluation, the humidity must be conditioned for 4 hours in ISO 139 standard atmosphere (Clause 8.2.6)
4. It is recommended to use the standard detergent provided by Ecolab (Appendix A)

Test report requirements

The report must contain 11 elements (Clause 9), especially the following:

• Whether acetic acid post-treatment was performed (Clause 8.2.3)
• Drying method (air drying/ironing) and temperature
• Number of cycles (default 1 time ≈ 5-10 times industrial washing)
• Color change at the crease

BS EN ISO 105-C12:2024 Referenced Document

• ISO 105-A01 Textiles - Tests for colour fastness - Part A01: General principles of testing
• ISO 105-A02 Textiles - Tests for colour fastness - Part A02: Grey scale for assessing change in colour; Technical Corrigendum 2
• ISO 105-A03 Textiles — Tests for colour fastness — Part A03: Grey scale for assessing staining
• ISO 105-A04 Textiles; tests for colour fastness; part A04: method for the instrumental assessment of the degree of staining of adjacent fabrics
• ISO 105-A05 Textiles - Tests for colour fastness - Part A05: Instrumental assessment of change in colour for determination of grey scale rating; Technical Corrigendum 2
• ISO 105-F02 Textiles - Tests for colour fastness - Part F02: Specification for cotton and viscose adjacent fabrics
• ISO 105-F04 Textiles - Tests for colour fastness - Part F04: Specification for polyester adjacent fabric
• ISO 105-F10 Textiles — Tests for colour fastness — Part F10: Specification for adjacent fabric: Multifibre AMENDMENT 1
• ISO 139 Textiles — Standard atmospheres for conditioning and testing AMENDMENT 1
• ISO 3696 Water for analytical laboratory use; Specification and test methods

BS EN ISO 105-C12:2024 history

• 2024 BS EN ISO 105-C12:2024 Textiles. Tests for colour fastness - Colour fastness to industrial laundering
• 2006 BS EN ISO 105-C12:2006 Textiles - Tests for colour fastness - Colour fastness to industrial laundering

Topics on standards and specifications

Standard and Specification