.

AATCC Gray Scale for Color Change

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

ParameterSpecification
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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