ASTM E1331-15 PDF

Scope: 5.1 The most direct and accessible methods for obtaining the color coordinates of object colors are by instrumental measurement using spectrophotometers or color

1.1 This test method describes the instrumental measurement of the reflection properties and color of object-color specimens by the use of a spectrophotometer or spectrocolorimeter with a hemispherical optical measuring system, such as an integrating sphere.

1.2 The test method is suitable for use with most object-color specimens. However, it should not be used for retroreflective specimens or for fluorescent specimens when highest accuracy is desired. Specimens having intermediate-gloss surfaces should preferably not be measured by use of this geometry.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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.

ASTM E1331-15 Referenced Document

ASTM D2244 Standard Test Method for Calculation of Color Differences From Instrumentally Measured Color Coordinates
ASTM E1164 Standard Practice for Obtaining Spectrophotometric Data for Object-Color Evaluation
ASTM E1345 Standard Practice for Reducing the Effect of Variability of Color Measurement by Use of Multiple Measurements
ASTM E179 Standard Guide for Selection of Geometric Conditions for Measurement of Reflection and Transmission Properties of Materials
ASTM E284 Standard Terminology of Appearance
ASTM E308 Standard Practice for Computing the Colors of Objects by Using the CIE System
ASTM E805 Standard Practice for Identification of Instrumental Methods of Color or Color-Difference Measurement of Materials
ASTM E991 Standard Practice for Color Measurement of Fluorescent Specimens

2023 ASTM E1331-15(2023) Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
2019 ASTM E1331-15(2019) Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
2015 ASTM E1331-15 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
2009 ASTM E1331-09 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
2004 ASTM E1331-04 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
1996 ASTM E1331-96(2003) Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
1996 ASTM E1331-96 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry