ASTM E1331-96(2003) - 10.7.2003
 
1. Scope

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 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.

 
2. Referenced Documents

D2244-23

Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates

E308-22

Standard Practice for Computing the Colors of Objects by Using the CIE System

E805-22

Standard Practice for Identification of Instrumental Methods of Color or Color-Difference Measurement of Materials

E991-21

Standard Practice for Color Measurement of Fluorescent Specimens Using the One-Monochromator Method

E1164-23

Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation

E284-22

Standard Terminology of Appearance

E1345-98(2019)

Standard Practice for Reducing the Effect of Variability of Color Measurement by Use of Multiple Measurements

E179-17(2022)

Standard Guide for Selection of Geometric Conditions for Measurement of Reflection and Transmission Properties of Materials