Table 1 Spectrophotometers used in this study with their specific aperture size and measuring geometry
Spectrophotometer | Diameter measuring aperture (mm) | Measuring geometry |
|---|---|---|
Labscan XE | 44 | 0°/45° |
25 | 0°/45° | |
Ultrascan Pro | 19/25a | d/8° |
Konica Minolta CM2600-d | 3/6a | d/8° |
8/11a | d/8° |