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The Spacing of the Higher ISO Light‐fastness Standards
Author(s) -
McLaren K.
Publication year - 1964
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.1478-4408.1964.tb02593.x
Subject(s) - daylight , grey scale , mathematics , optics , environmental science , analytical chemistry (journal) , chemistry , computer science , physics , chromatography , artificial intelligence
Strips of the ISO Master Light‐fastness Standards 5–8 were exposed to daylight for five different periods and the amounts of fading assessed visually against a Grey Scale and determined colorimetrically. Standard 6 was found to be 1·6 times as fast as Standard 5, and Standard 7 4·2 times as fast as Standard 6. The significance of these ratios is discussed.