The Exchange Test Method

A-4: Colorfastness to Light

Issue Date: 30 Apr 1993

Revision Date: 09/30/2011

  1. PURPOSE AND SCOPE:

    To determine the colorfastness to light of various materials.
  2. PRINCIPLE:

    The colorfastness to light of the sample is evaluated by comparison of the exposed portion of the material to the unexposed original material.
  3. REFERENCE:

    AATCC Test Method 15-2009, Colorfastness to Perspiration.
  4. APPARATUS AND MATERIALS:

  5. PROCEDURE:

  6. EVALUATION:

  7. REPORT:

    Report numerical ratings in terms of color change by comparing to Gray Scale for Color Change. Record the lowest rating observed for each test specimen.
  8. NOTES: