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Wool – A Colour–difference Analysis of Fastness–test Data
Author(s) -
KING MICHAEL G.,
SELTZER IRWIN
Publication year - 1974
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.1478-4408.1974.tb03206.x
Subject(s) - wool , colour difference , significant difference , grey scale , test (biology) , mathematics , range (aeronautics) , pulp and paper industry , computer science , statistics , artificial intelligence , materials science , optics , engineering , composite material , physics , botany , biology
The possibility of replacing visual assessments of the colour change of dyed wool fabrics subjected to a standard washing test with instrumentally measured colour differences is examined. Washing tests on a wide range of dyeings on Superwash wool were carried out, and the colour difference AE between the washed and unwashed patterns was calculated in AN40 units. The results were compared with routine visual assessments of three observers. Good agreement on ‘pass‐fail’ decisions was found between the instrumental and the visual techniques. The ‘pass‐fail’ limit of 3–4 on the ISO Grey Scale for Assessing Change in Colour in the Superwash test corresponded to 2. 2 AN40 units over the colour range investigated.