1. Rationale
At the ASTM Committee Meetings in San Diego, California on June 26, 2012, members of D13.59 voted to revise Section 6 in terms of the temperature of illumination used for visual inspection and grading. The rationale for the change in illumination is that cool white fluorescent tubes with a specified correlated color temperature of 4100 to 4500 K are not available in the U.S. and users are not able to meet the specification for illumination as required by Test Method D5430, Section 6. In addition, data reported in San Diego showed no correlation between color temperature of the illumination bulb and visual ratings.
Keywords
Defects--textiles; Grading--textiles; Numerical designation (for fabric grading); Textile fabrics (general); Visual examination--textiles
Citing ASTM Standards
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