Continues the series by including all revisions to existing standards made since the publications of the fifth edition (no date noted) and a number of new standards. They provide guidance in the instrumentation and visual appraisal of the appearance of materials, and to describe specific measurement1 Schematic Diagram of Reflectometer 5.2 The measurement of this test method includes both specularly and diffusely ... otherwise multiple measurements shall be made and averaged to achieve an equivalent specimen area (see 8.2.3). ... 6.2.1 White Reflecting Tile or Standard (Mandatory) a This instrument standard shall be calibrated by use of 30/f geometry ... After such calibration the instrument must read the assigned standard values within Ap0.1 unit of total reflectance factor.
Title | : | ASTM Standards on Color and Appearance Measurement |
Author | : | American Society for Testing and Materials |
Publisher | : | Astm International - 2000 |
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