ISO 105-X12 Standard: Guidelines for Colour Fastness to Rubbing-gester-instruments.com

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ISO 105-X12 Standard: Guidelines for Colour Fastness to Rubbing June 16 , 2025

ISO 105-X12 Standard: Guidelines for Colour Fastness to Rubbing

ISO 105-X12 specifies a method for determining the colour fastness of textiles to rubbing (crocking), using an electronic crockmeter. This section details the key aspects of the standard.

I. Scope

ISO 105-X12 is applicable to all types of textiles for the determination of colour fastness to rubbing (crocking). Examples include textile floor coverings (e.g., carpets), pile fabrics, and other conventional textiles. The method simulates rubbing under controlled dry and wet conditions.

II. Principle

Specimens are rubbed under controlled conditions with a dry rubbing cloth and a separate wet rubbing cloth. The colour fastness is then assessed by comparing the degree of staining on the rubbing cloths.

III. Apparatus

The testing device stipulated in ISO105-X12 standard mainly includes Electronic Crockmeter, rubbing cloth, grey card and so on.

1. Test apparatus: The crockmeter produces reciprocating motion with two interchangeable friction heads:

-For pile fabrics and textile carpets: rectangular head (19 mm × 25.4 mm), applying downward force of 9±0.2N, and reciprocating back and forth along the straight line trajectory of 104±3mm in length.

-For other textiles, the friction head consists of a cylinder with a diameter of 16±0.1mm, both heads apply a downward force of 9 N ± 0.2 N, along the length of 104±3mm linear trajectory back and forth reciprocating motion.

2. Rubbing cloth: desized and bleached cotton fabric without finish, without finishing, and according to the test requirements cut into the appropriate size.

3. Grey card: used to evaluate the staining level of the sample after rubbing, according to ISO105-A03 standard.

IV. Procedure

1. Specimen preparation: Cut representative samples as specified in the standard.

2. Installation of friction device: choose suitable friction head and friction cloth according to the type of sample and install them on the testing instrument.

3. Conduct friction test: Conduct dry friction and wet friction test respectively and record the relevant data during the test.

4. Evaluate the result: Use grey card to evaluate the colour staining level of the sample after rubbing, and get the colour fastness level of textiles to rubbing.

V. Precautions

During the test, the consistency of the test conditions should be ensured to avoid influencing the test results.

The use of grey card should be in strict accordance with the standard regulations to ensure the accuracy of the evaluation results.

GESTER Electronic Crockmeter complies with the following standards:

BS 1006- D02, ISO 105- X12/D02, AATCC 8/165, ASTM D6279, JIS L 0849 Type1,JIS L 0862 Type1

AATCC Crockmeter is used to determine the colour fastness of textiles to dry or wet rubbing. A pinned acrylic sample holder ensures rapid sample mounting and repeatability of results.