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 1BS 3430
Original price was: $78.74.$39.00Current price is: $39.00.
Method for visual assessment, by grid assay, of dirt in paper for character recognition
BSI Group , 06/30/1977
Pages: 2
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