Gakushi Crockmeter YG(B)571JIS

[Instrument Name]: Gakushi Rubbing Color Fastness Tester

[Scope of Application]:

It is used for testing the dry and wet rubbing color fastness of colored fabrics (cotton, chemical fiber, blends, etc.) and leather. The specimen is secured onto a curved platform (Gakushin type); a weighted rubbing head presses against the specimen and moves in a reciprocating motion. The rating is determined based on the degree of staining on the rubbing cloth attached to the head. A microcontroller-based counter allows for the presetting of the number of rubbing cycles, with automatic stopping upon completion.

[Test Mode]: Gakushin type

[Relevant Standards]:

JIS L0801-2004 (General rules for color fastness tests), JIS L0823, JIS L1006, JIS L1084-2009 (Test methods for flocked fabrics), JIS K6328-1999 (Test methods for rubber-coated fabrics), JIS P8136 (Determination of abrasion resistance of paperboard), JIS L0849-2004 Type II (Gakushin type) (Test method for color fastness to rubbing), QB/T1646, etc.

[Technical Parameters]:

1. Curved test platform (Japanese standard: shape proposed by the Japan Society for the Promotion of Science/Gakushin)

2. Number of stations: 6 stations

3. Rubbing platform: Curved surface with a radius of 200mm

4. Rubbing head: Curved surface with a radius of 45mm

5. Test load: 200g

6. Test speed: 30 ± 3 cycles/minute

7. Counter: LCD display (0–999,999); independent counting for each station

8. Rubbing stroke: 100mm

9. Dimensions: 600 × 500 × 340mm

10. Weight: 70kg

[Standard Configuration]:

1. Six sets of 200g standard weights

2. One pack of GB/T 3920 standard white cotton cloth