Product Description

Benchtop spectrophotometer ST-820P is an intelligent, convenient and accurate spectrophotometer with TFT true color 7-inch capacitive touch screen, full optical spectrum and Android operating system. It has two illumination modes: pulsed xenon lamp and LED. it is compatible with reflection D/8 and transmission D/0 measurement modes. It can include UV or exclude UV measurement. It measures accurate and stable colors, has large storage capacity, and powerful expansion function on PC side. It can be used for laboratory color analysis and transmission.

Inter station difference：dE<0.25(Xlav caliber)

It has two kinds of lighting sources: pulse xenon lamp and led

There are 24 kinds of standard light sources and more than 40 kinds of measurement indexes

Temperature and humidity operation compensation function

Item	Technical Parameter
Illumination & Viewing Geometry	Reflectance: D/8° diffuse illumination, 8° viewing (SCI/SCE synchronous) Transmittance: D/0° diffuse illumination, 0° vertical viewing
Detector	Silicon Photodiode Array
Spectroscopic Component	Concave Grating
Integrating Sphere Diameter	152 mm
Wavelength Range	360 ~ 780 nm
Wavelength Step	10 nm
Spectral Half Bandwidth	5 nm
Reflectance Range & Resolution	0 ~ 200%, resolution 0.01%
Light Source	Combined Pulse Xenon Lamp + LED
UV Test Modes	Full UV included, 400nm cut, 420nm cut, 460nm cut
Measurement Speed	Single SCI/SCE < 2 s; Combined SCI+SCE < 4 s
Measuring Apertures	Reflectance: XLAV Φ30, LAV Φ18, MAV Φ11, SAV Φ6 (auto identification) Transmittance fixed aperture: Φ25 mm
Transmittance Sample Limit	Unlimited width & height, max thickness ≤ 50 mm
Repeatability (XLAV Aperture)	Spectrum reflectance/transmittance standard deviation ≤ 0.1%; Chromaticity ΔE*ab ≤ 0.02 (30 continuous measurements on white tile at 5s interval)
Inter-Instrument Agreement	XLAV ΔE*ab ≤ 0.25 (average of 12 BCRA II tiles at 23℃)
Standard Light Sources	A, C, D50, D55, D65, D75, F1-F12, CWF, U30, DLF, NBF, TL83, TL84
Standard Observer Angles	2°, 10°
Supported Color Spaces	Lab*, LCh, Hunter Lab, Yxy, XYZ
Calculable Color Indices	Whiteness WI, Yellowness YI, Tint, Metamerism Index, Color Fastness, ISO Brightness, R457, Density values, APHA/Gardner/Saybolt liquid color, Haze, Opacity, Total Transmittance, Color Strength
Color Difference Formulas	ΔEab, ΔECH, ΔEuv, ΔECMC, ΔE94, ΔE00, Hunter ΔE*ab, 555 shade sorting
Display Content	Spectrum curve, reflectance/transmittance value, Lab* data, color difference, pass/fail judgment, color simulation, haze, liquid chromaticity, color tendency
Touch Screen	7-inch Android capacitive touch screen, rotatable
Storage Capacity	8GB built-in U disk for data storage & export
Audit Trail	Supported (FDA & CFDA compliant)
Power Supply	12 V / 3 A DC
Operating Environment	5 ~ 40 ℃, relative humidity ≤ 80% (no condensation at 35℃)
Storage Environment	-20 ~ 45 ℃, relative humidity ≤ 80% (no condensation at 35℃)
Communication Interfaces	USB-A, USB-B, RS-232
Overall Dimension	465 × 240 × 260 mm
Net Weight	10.8 kg
Built-in Camera	Yes, for measuring area preview
Measurement Modes	Horizontal / Vertical / Downward (downward requires optional accessories)
Auto Compensation	Automatic temperature & humidity compensation