ASTM D6131-97 - 10.6.1997
 
1. Scope

1.1 This test method is intended to be used to determine the tint undertone (blue or yellow) of titanium dioxide pigments. This relates to the effective particle size of the pigment. It is based upon tinting with a black iron oxide, but other blacks may be used if found suitable.

1.2 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

D2745-00(2023)

Standard Test Method for Relative Tinting Strength of White Pigments by Reflectance Measurements

E1331-15(2023)

Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry

E1347-06(2020)

Standard Test Method for Color and Color-Difference Measurement by Tristimulus Colorimetry

D16-1989

Suggested Procedure for Development of Spill Prevention Control and Countermeasure (SPCC) Plans - (To Assist Conformance to Requirements of Title 40, Code of Federal Regulations, Part 112)

E313-20(2025)

Standard Practice for Calculating Yellowness and Whiteness Indices from Instrumentally Measured Color Coordinates

E1349-06(2022)

Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional (45?:0? or 0?:45?) Geometry