Color Fastness to Crocking (Rubbing)
AATCC 8 & ISO 105 X12 are the most common standards for assessing how colorfast a fabric is when continually rubbed against another.
For instance, if we wear a jacket over a t-shirt, after a long day of movement, will the fabric from one stain the other?
The tested fabric is rubbed against both wet and dry, non-dyed fabric for a specified time on a specially designed machine – a crockmeter.
Good quality materials score a rating of 4 for dry rubbing and 3 to 3.5 for wet rubbing.
How colorfastness to crocking (rubbing) is tested: