Research Report RR:E12-1001
An interlaboratory study was conducted by laboratories which used sixteen instruments in nine different models to collect three replicate readings of twelve ceramic color standards so a precision statement could be established for test method E1349.
E1349-06(2013) Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional (45°:0° or 0°:45°) Geometry
Committee E12 on Color and Appearance
Subcommittee E12.02 on Spectrophotometry and Colorimetry