Electronic Crockmeter Rubbing Fastness Tester
Get a quote：
Whats/App: +86 156 1874 6768
Web: standard-groups.com
The G238AA Manual Rubbing Color Fastness Tester is the most commonly used model in the textile industry for testing the color fastness of fabrics to dry and wet rubbing. Under specified conditions, the specimen is rubbed against a standard white cloth, and the degree of staining transferred to the white cloth is evaluated using a gray scale for staining. It is equipped with a crank arm, counter, stainless steel specimen holder, and test heads of 16 mm or 25 mm diameter (providing a vertical pressure of 9 N ±10%).
Application
Suitable for evaluating rubbing color fastness in textiles, knitted fabrics, leather, electroplated metal plates, printing, and related industries.
Standards
GB/T 3920
BS 1006 D02
ISO 105 D02 / X12
AATCC 8 / 165
NEXT TM6
M&S C8 / C8A
Test Procedure
Specimen preparation:
(1) The specimen and standard rubbing white cloth shall be conditioned under standard temperature and humidity conditions.
(2) If the specimen contains multiple colors, all colors shall be rubbed.
(3) If the area of each color is sufficient, specimens shall be taken separately.
(4) Cut specimens for both dry and wet rubbing, ensuring all colors are tested.
(5) If the front and back sides differ in material or color, both sides shall be tested.
(6) Dry and wet rubbing tests shall not be conducted on the same area of the specimen.
Dry rubbing:
(1) Place the specimen flat on the tester covered with abrasive paper, aligning the length direction with the motion direction, and fix it with the holder.
(2) Fix the standard white cloth on the rubbing head using a spring clip, and gently place it on the specimen.
(3) Ensure no slipping or wrinkling occurs during rubbing.
(4) Place the rubbing head on the specimen, power on the instrument, and set the number of cycles.
(5) Press START to begin the test; the instrument stops automatically after reaching the set cycles.
(6) Remove the white cloth and evaluate staining using a gray scale.
Wet rubbing:
(1) Fully immerse the standard white cloth in distilled water.
(2) Remove and press it between filter papers to achieve a certain moisture content.
(3) Follow the same steps as in dry rubbing.
Result evaluation:
(1) Before evaluation, gently remove loose fibers from the white cloth using transparent adhesive tape.
(2) Place three layers of unused white cloth under the tested cloth and evaluate staining using the standard gray scale.
Test report:
(1) Report the test standard used
(2) Report results for dry and wet rubbing separately
在线联系供应商
Other supplier products
 |
High Temperature Thermal Conductivity Tester | Whats/App: +86 156 1874 6768 Web: standard-groups.com Application The tester is suitable for high-temperature thermal conductivity testing in mu... |
 |
Syringe Sealing Positive Pressure Tester | Whats/App: +86 156 1874 6768 Web: standard-groups.com The Syringe Sealing Positive Pressure Tester is a precision instrument designed to evaluate... |
 |
ISO 11170 Aviation Propulsion Fuel Testing Equipment | Get a quote： Whats/App: +86 156 1874 6768 Web: standard-groups.com The Aviation Propulsion Fuel Test System is a precision testing platform desi... |
 |
Thermal Radiation Melt Drop Tester | Whats/App: +86 156 1874 6768 Web: standard-groups.com Application Outdoor Sports Gear: Evaluating the waterproof breathability and thermal balan... |
 |
UL1581 FCable Burning Test Chamber | Whats/App: +86 156 1874 6768 Web: standard-groups.com Introduction: Wire and cable horizontal vertical combustion tester is designed and manufac... |
Same products
 |
HDPE高速水冷双壁波纹管生产线 | 卖方: Shandong HUASU Plastic Technology Co.,Ltd. | 机头模具采用双流道结构、氮化磨光处理机头，偏壁调整方便快捷，保证内外层壁厚均匀和稳定成型。 最新设计密闭压力水冷冷却结构，冷却充分，多点分布真空系统，效率更高，生产速度更快。 双层在线扩口功... |
 |
PanEVAP & MVR system | 卖方: Yangzhou Panstar Heat Exchanger Equipment Co., Ltd | A multiple-effect evaporator is a device that efficiently uses steam heat to evaporate water. Wat... |
 |
PanGAP wide gap welded plate heat exchanger | 卖方: Yangzhou Panstar Heat Exchanger Equipment Co., Ltd | PanGAP wide gap welded plate heat exchangerconsists of a welded plate pack with different channel... |
 |
PanBloc welded plate heat exchanger | 卖方: Yangzhou Panstar Heat Exchanger Equipment Co., Ltd | PanBloc welded plate heat exchangeris compact and efficient, although fully welded, is totally ac... |
 |
PanBox welded plate heat exchanger | 卖方: Yangzhou Panstar Heat Exchanger Equipment Co., Ltd | PanBox welded plate heat exchangerconsists of a laser welded plate pack with optimized corrugated... |
