Technical Parameter

Model	CS-420	CS-421	CS-422
Color	Dark Blue
Geometry	D/8(diffused illumination,8 degree viewing) SCI(specular component included),SCE(specular component excluded)
Repeatability	Chromaticity value：Standard deviation value ΔEab≤ 0.03 Average value：dEab≤ 0.04，maximum value：dE*ab≤ 0.06 (Measure the whiteboard 30 times at 5-second intervals after whiteboard calibration)
Inter-instruent agreement	ΔE*ab≤0.4
Display accuracy	0.01
Test Aperture/Illumination area	Φ8mm/Φ11mm	Φ4mm/Φ6mm	Φ4mm/Φ6mm 8mm/Φ11mm
Color Space and Indices	Reflectance, CIE-Lab, CIE-LCh, Hunter Lab, CIE-Luv, XYZ, Yxy, RGB, Color Difference (ΔEab, ΔEcmc, ΔE94, ΔE00), Whiteness Index (ASTM E313-00, ASTM E313-73, CIE/ISO, AATCC, Hunter, Taube Berger Stensby), Yellowness Index(ASTM D1925, ASTM E313-00, ASTM E313-73), Blackness Index(My,dM), Staining Fastness, Color Fastness, Tint(ASTM E313-00), Color Density CMYK(A,T,E,M), Metamerism Index Milm, Munsell, Opacity, Color Strength
Illuminants	A,B,C,D50,D55,D65,D75,F1,F2,F3,F4,F5,F6,F7,F8,F9,F10,F11,F12,CWF,U30,U35,DLF,NBF,TL83,TL84
Color matching software	Support APP
Lighting source	LED+UV
Measurement observation method	Camera
Calibration	Auto Calibration
Software	Andriod,IOS,Windows
Accuracy Guarantee	Pass National Metrology Level I
Observer	2°，10°
Sphere diameter	40mm
Standards compliant	Standards complian CIE tNo.15，GB/T 3978,GB 2893,GB/T 18833,ISO7724-1,ASTM E1164,DIN5033 Teil7
Spectroscopic method	Integrated Optics
Sensor	CMOS sensor
Wavelength interval	10nm
Wavelength range	400-700nm
Reflectance	0-200%
Reflectivity Resolution	0.0001
Measure time	About 1 s
interface	USB，Bluetooth
Screen	IPS Full color screen,2.4 inch
Battery	8000 continuous measurements on a single charge， 3.7V/3000mAh
Light source life	1 million times in 10 years
Language	Chinese, English
Storage	APP Mass Storage

(Note: 1. The main difference between CS-420/421/422 models is the aperture size; 2. The illumination aperture is the actual aperture size of the instrument.)