SDC Fading Grey Scale
Applicable Standards
The SDC Grey Scale adheres to international colorfastness testing protocols, including:
- ISO 105-A02(Grey Scale for Assessing Change in Color)
- AATCC Evaluation Procedure 1(Grey Scale for Stain and Color Change)
- BS EN ISO 105-A02(British/European equivalent)
- JIS L 0801(Japanese Industrial Standard for Grey Scale Assessment)
These standards ensure uniformity in color change evaluation, facilitating global trade and compliance.
Working Principle
The Grey Scale operates as avisual reference tool:
- Color Comparison: Users place the test specimen alongside the Grey Scale chips under standardized lighting (e.g., D65 illuminant).
- Rating Assignment: The degree of color change is matched to the closest Grey Scale pair, with1 = severe fadingand5 = no visible change.
- Objective Grading: Half-step increments (e.g., 4-5) allow nuanced evaluation for borderline cases.
Test Principle & Applications
The Grey Scale is used incontrolled testing environmentsto:
- Lightfastness Testing: Assess dye durability after xenon arc or weatherometer exposure (e.g., ISO 105-B02).
- Wash Fastness: Evaluate color bleeding or staining after laundering (AATCC 61, ISO 105-C06).
- Perspiration/Rub Fastness: Measure color retention under simulated wear (ISO 105-E04, AATCC 8).
Key Applications:
- Textile Manufacturing: Quality control for dyes and finishes.
- Retail: Verifying color consistency in garment production.
- Research: Developing fade-resistant pigments for automotive/aerospace textiles.
The SDC Fading Grey Scale is an indispensable tool for industries requiring precise colorfastness evaluation, offering a standardized, cost-effective solution to ensure product performance and customer satisfaction.
Main Parameters
| Parameter | Specification |
|---|---|
| Scale Type | 5-step numerical rating (1–5) with half-step increments (e.g., 4-5) |
| Dimensions | 140 × 50 mm (standard card size) |
| Material | Durable laminated paper with fade-resistant inks |
| Color Pairs | 5 pairs of gray chips (original vs. faded) for visual comparison |
| Lightfastness | Inks meet ISO 105-B02 standards for resistance to light exposure |
| Packaging | Individually sealed in protective sleeves to prevent contamination |
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