Stringent quality control, including colour-difference measurement tests undertaken by independent assessors.
Ease of use, with sliding scale in a cardboard sleeve and having a protective plastic envelope.
Each scale can be independently used, minimising handling and possible soiling in use.
Each scale has a nine-point gradation to provide more accurate assessment.
Comes in ISO standard (from S.D.C UK) and American standard from AATCC – USA.
Helps grading the tested specimen after conducting the rubbing test (grey scale for staining) and wash fastness test (grey scale for colour change).
Also used for colour matching with original specimen (grey scale for colour change ).
Grading of 1 up to 5 can be done.
For assessing staining that occurs during fastness testing. Consisting of nine pairs of non-glossy grey or white and grey colour chips, which illustrate the perceived colour difference corresponding to fastness ratings 5, 4, 3, 2 and 1, with intermediate half steps in accordance with the requirements of ISO105.