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BS 5477:1977
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BS 5477:1977 Method for visual assessment, by grid assay, of dirt in paper for character recognition
standard by BSI Group, 06/30/1977
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Full Description
Measures the proportion of the surface area containing particles that are immediately obvious to the eye. Reports the number of grid squares per 6 m^2 containing dirt.Cross References:
BS 950:Part 1
BS 3430