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Significance and Use
This practice is useful for establishing and maintaining standard lighting conditions in cotton classing rooms. This permits the classer to make a valid assessment of the color grade of cotton. The cotton classer attempts to classify cotton on the basis of the color the sample and the standard would have in daylight. It is essential that the lighting in a classing room is constant and that it makes the color of cotton appear as nearly as possible as it would in natural daylight.
Uniform lighting conditions permit classers to go from one classing room to another without having to make adjustments for wide differences in the amount and quality of lighting.
1.1 This practice covers practices in general use in the United States for lighting cotton classing rooms, provides general background information regarding the development and establishment of these practices, and prescribes a test method for appraising the color quality of lamps procured for this purpose.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D123 Terminology Relating to Textiles
D7139 Terminology for Cotton Fibers
ICS Number Code 91.160.10 (Interior lighting)
UNSPSC Code 11151507(Cotton fibers)
ASTM D1684-07(2012), Standard Practice for Lighting Cotton Classing Rooms for Color Grading , ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top