AATCC Gray Scale for Color Change
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Standards
- AATCC Evaluation Procedure 1(Grey Scale for Stain and Color Change)
- ISO 105-A02(Grey Scale for Assessing Change in Color)
- JIS L 0801(Japanese Industrial Standard for Gray Scale Assessment)
- GB/T 250(China’s National Standard for Gray Scale for Color Change)
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 |
Laminated paper with fade-resistant inks, sealed in protective sleeves |
| 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 |
| Precision |
Tolerance ≤ ±0.5 grade for repeatable grading |
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