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ASTM D1684-07(2020)

Current Reaffirmation

Standard Practice for Lighting Cotton Classing Rooms for Color Grading

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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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 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.

5.2 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.

SDO ASTM: ASTM International
Document Number D1684
Publication Date July 1, 2020
Language en - English
Page Count 4
Revision Level 07(2020)
Supercedes
Committee D13.11
Publish Date Document Id Type View
Jan. 1, 2007 D1684-07 Revision
Oct. 10, 1996 D1684-96 Revision
July 1, 2020 D1684-07R20 Reaffirmation
July 1, 2012 D1684-07R12 Reaffirmation
Oct. 10, 1996 D1684-96R02 Reaffirmation