TAPPI T 646 : 2006

1 Scope
2 Summary
3 Significance
4 Definitions
5 Apparatus
6 Calibration
7 Sampling and preparation of test specimens
8 Measurement
9 Report
10 Precision
11 Keywords
12 Additional information
Appendix A: Preparation of kaolin clay powder
            plaques for reflectometry
Appendix B: Preparation of calcined kaolin
            powder plaques for reflectometry
Appendix C: Preparation of CACO[3] plaques for
            reflectometry
Appendix D: Preparation of TiO[2] plaques for
            reflectometry
Appendix E: Preparation of alumina trihydrate
            plaques for reflectometry
Appendix F: Preparation of structured pigment
            plaques for reflectometry
Appendix G: Preparation of other pigment for
            reflectometry
References

Specifies a procedure for determining the brightness of clay or other mineral pigment that has been pulverized under controlled conditions and made into a uniformly compacted pigment plaque.