The ASTM D332-87 (2020) standard describes a test method for visually observing the relative tinting strength of white pigments, suitable for quality control and refereeing. This method evaluates the color-strength of white pigments by comparing the test pigment to a reference standard. Although test conditions may differ from actual industrial conditions, this method provides a fast and economical means of quality control. The standard specifies procedures for dispersing pigments with Grinder and emphasizes that any material changes need to be agreed upon by both parties.