Developed in 1967 by AATCC Committee RA57
1. Purpose and Scope
This test method covers the measurement of the degree of cleanness of pile floor
coverings, in the range from clean to a middle degree of soiling. It can
be used to measure the accumulation of soil, or the removal of soil by a cleaning
procedure. It can be used with pile floor coverings of any color, pattern,
structure, or fiber content.
2.1 The degree of difference in cleanness between an original or clean area, and the area under examination is determined by visual matching with a stepwise series of differences in gray chips selected to form a geometrical scale of differences on the dark-light axis.
Copyright © 2012 American Association of Textile Chemists and Colorists, Research Triangle Park, N.C., USA