ISO 11640 Double-Station Electric Crockmeter – BONAD Rubbing Colour Fastness Tester
Key Application:
This Crockmeter is specifically designed for determining the color fastness of leather and textiles to rubbing (crocking). It is crucial for:
- Quality control in leather goods production (shoes, bags, furniture).
- Ensuring textile durability and color retention in apparel and home furnishings.
- Verifying material compliance with international safety and quality standards.
- Research and development of new materials and dyes.
- Testing footwear components and accessories.
Test Principle:
The Double-Station Electric Crockmeter operates by subjecting the surface of the test specimen to repeated, reciprocating rubbing motions under controlled pressure. A standard wool felt abrasive pad is mounted on the rubbing finger. For wet testing, the felt is saturated with distilled water according to the standard. The test piece is securely held in place while the rubbing finger moves back and forth over it for a specified number of cycles. After testing, the color fastness is evaluated by comparing:
- The change in color of the test specimen using a Grey Scale for color change.
- The degree of color staining transferred to the white rubbing cloth (wool felt) using a Grey Scale for staining.
- Any visual damage to the specimen’s surface is also recorded.
Conforming Test Standards:
This Double-Station Electric Crockmeter is engineered to meet the requirements of major international standards for rubbing fastness testing, including:
- ISO 11640: Leather – Tests for colour fastness – Colour fastness to rubbing
- DIN 4843: Testing of leather; determination of the colour fastness of leather against rubbing
- SATRA PM 173: Colour fastness to rubbing (crocking)
- QB/T 2537: Footwear – Test methods for uppers, lining and insocks – Colour fastness to rubbing (Industry Standard – China)
- GB/T 20991 section 7.3: Personal protective equipment – Footwear – Test method for uppers, lining and insocks; Colour fastness to rubbing (National Standard – China)
- EN ISO 20344 section 7.3: Personal protective equipment – Test methods for footwear (Identical to ISO 20344; Includes crocking test)
- AS/NZS 2210.2 section 7.3: Occupational protective footwear – Test methods (Includes crocking test; Australia/New Zealand)
- ISO 17700 Method A: Footwear – Test methods for uppers, lining and insocks – Colour fastness to rubbing (Identical to QB/T 2537, GB/T 20991 7.3, EN ISO 20344 7.3)
Product Features & Advantages:
- Dual Testing Stations: Perform simultaneous tests on two separate specimens, significantly increasing throughput and lab efficiency.
- Electric Operation: Provides consistent, motor-driven reciprocating motion for reliable and repeatable results.
- High-Quality Stainless Steel: Core components are constructed from durable stainless steel, ensuring longevity, corrosion resistance, and minimal maintenance.
- Compact & Professional Design: Space-saving footprint with a robust and aesthetically pleasing appearance suitable for any laboratory environment.
- Comprehensive Standard Compliance: Meets all critical requirements of ISO 11640, DIN 4843, SATRA PM 173, QB/T 2537, GB/T 20991, EN ISO 20344, AS/NZS 2210.2, and ISO 17700 Method A.
- Integrated LCD Counter: Digital display clearly shows and controls the number of rubbing cycles (0-9999), ensuring precise test execution.
- Dry & Wet Testing Capability: Easily configured for both standard dry rubbing tests and wet rubbing tests as specified by applicable standards.
- User-Friendly Operation: Simple setup, intuitive controls, and easy specimen clamping make operation straightforward for technicians.
- Low Maintenance: Robust design and quality materials minimize downtime and servicing needs.
Technical Parameters
| Model | BND-DSEC |
| Type | Electric (with two stations) |
| Counter | 1 ~ 999,999 |
| Rubbing Load | 9 N |
| Motor | 1/4 HP |
| Specimen Size | 140 × 50 mm or 100 × 25 mm |
| Rubbing Finger | Φ16 mm or 19 × 25.4 mm |
| Rubbing Distance | (104 ± 3) mm |
| Rubbing Speed | 60 cpm (one cycle per second) |
| Tester Dimension | 58 × 55 × 38 cm |
| Controller Dimension | 19 × 19 × 16 cm |
| Tester Weight | 47 kg |
| Power | 1 phase, AC 220 V, 50 Hz or specified |
Customization & Options:
We understand diverse testing needs. This Double-Station model can be customized to your specific requirements. Additionally, inquire about our Multi-Station Crockmeter solutions for even higher volume testing capacity.
Ensure your leather and textile products meet the highest standards for color fastness. Contact us today for a quote on the reliable ISO 11640 Double-Station Electric Crockmeter or to discuss custom configurations!
