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Errors in the Assessment of Colour Fastness
Author(s) -
Bülow Ulf,
Horrdin Sture
Publication year - 1957
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1957.tb02159.x
Subject(s) - variation (astronomy) , variance (accounting) , observer (physics) , variance components , statistics , mathematics , physics , astrophysics , accounting , quantum mechanics , business
The different sources of variation in assessing fastness, especially light fastness, are discussed. By a variance component analysis the total variance and its components—the process variation, the testing variation, and the assessment variation—have been estimated for eight different dyeings on a cotton fabric. The assessment variation is found to be considerable, depending both on differences with one and the same observer (time factor) and on differences between different observers (observer factor). The possibility of obtaining a truer estimate of fastness is briefly discussed.