1.1 This practice provides a guide to selection of specimens for appearance measurement by reflected light as well as a discussion of factors to be considered in their preparation for measurement. Standardized selection and presentation procedures will assist in achieving agreement between evaluations carried out in different laboratories as well as helping to achieve better correlations between visual evaluations and instrumental measurements.
Note 1: This standard is not a practice for preparation of test panels of coatings; see Practices D823.
Product Details
- Published:
- 06/01/2020
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