| Accuracy Accuracy is guaranteed with a laser light source. Accuracy is not guaranteed with standard illuminant A (light bulb).
 | 
        
            | Accuracy guarantee temperature and humidity range | Temperature: 23°C ±5°C (73°F ±9°F), Humidity: 80% RH or less (Warm-up: 30 minutes or longer) | 
        
            | Radiometric quantity | Relative accuracy | ±4.6% rdg. (473 nm, 40 μW) Standard (532 nm, 60 μW)
 ±4.6% rdg. (633 nm, 80 μW)
 | ±4.6% rdg. (473 nm, 40 μW) Standard (532 nm, 60 μW)
 ±4.6% rdg. (633 nm, 80 μW)
 | - - - | 
        
            | Accuracy | ±6.5% rdg. (532 nm, 9 mW/m2) | ±8% rdg. (532 nm, 3 W/sr m2) | ±4.2% rdg. (473 nm, 0.1 mW) ±4.2% rdg. (532 nm, 0.1 mW)
 ±4.2% rdg. (632.8 nm, 0.1 mW)
 | 
        
            | Centroid wavelength | Blue | ±0.5 nm (435.8 nm mercury lamp) | 
        
            | Green | ±0.5 nm (546.1 nm mercury lamp) | 
        
            | Red | ±0.5 nm (632.8 nm, 0.1 mW) |