Spectrophotometer

Benchtop Grating Spectrophotometer BK-GS821

Model BK-GS821 Table-top

The instrument is the bench-top spectrophotometer with excellent repeatability, which is with auto calibration function to guarantee the short term and long-term repeatability even after drastic changes in the environment. Advanced automatic calibration technology greatly improves long-term repeatability of instruments. Under constant temperature, the dE*ab of day 1 and day 30 can still reach 0.015. At any temperature change from 0℃ to 40℃, dE*ab can reach less than 0.1.

Transmission
Sample height and thi…
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A closer look

About this equipment

.Features:
1. High precision automatic calibration, excellent long-term repeatability, ensure excellent measurement repeatability even after environment changes.

2. It has two lamps: pulsed xenon and LED.

3. 24 kinds of illuminants and more than 40 measurement indices.

4. Temperature and humidity compensation function.

5. 7-inch touch screen, Android operate system.

6. Dual optical paths spectrum analysis technology.

7. Support SCI+SCE simultaneous rapid measurement.

Technical Parameters:

Model BK-GS821-FL
Optical Geometry Reflectance: d/8(Diffused illumination, 8-degree viewing)

Simultaneous measurement of SCI/SCE, conform to CIE No.15, GB/T 3978, GB 2893, GB/T 18833, ISO7724/1, DIN5033 Teil7, JIS Z8722 condition C, ASTM E1164, ASTM-D1003-07

Transmittance d/0(Diffused illumination, 0-degree viewing)

Integrating Sphere Size 152mm
Light Source Pulse Xenon lamp and LED lamp
Spectrophotometric Mode Concave grating
Sensor Silicon photodiode array
Wavelength Range 360~780nm
Wavelength Interval 10nm
Measured Reflectance Range 0~200%, resolution 0.01%
Measuring Aperture Reflectance: XLAV Φ25.4mm/Φ30mm, LAV Φ15mm/Φ18mm,

MAV Φ8mm/Φ11mm, SAV Φ3mm/Φ6mm 

Users can customize the caliber, automatic identification of caliber switching 

Transmittance: Φ17mm/Φ25mm

Color Space CIE LAB, CIE LUV, LCh, Hunter Lab, Yxy, XYZ, Musell, s-RGB, βxy
Color Difference Formula ΔE*ab, ΔE*CH, ΔE*uv, ΔE*cmc, ΔE*94, ΔE*00, ΔEab(Hunter), 555 color classification
Other Colorimetric Index WI(ASTM E313-00, ASTM E313-73, CIE, ISO2470/R457, AATCC, Hunter, Taube Berger, Stensby), YI(ASTM D1925, ASTM E313-00, ASTM E313-73), Tint(ASTM E313-00), Metamerism index milm, stain fastness, color fastness, ISO brightness, R457, A density, T density, E density, M Density, APHA/Pt-Co/Hazen, Gardner, Saybolt, ASTM color, Haze, Total Transmittance, Opacity, Color Strength
Observer Angle 2° and 10°
Illuminant 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, ID50, ID65, LED-B1, LED-B2, LED-B3, LED-B4, LED-B5, LED-BH1, LED-RGB1, LED-V1, LED-V2
Displayed Data Spectral data, spectral graph, chromaticity data, color difference data, color difference graph, pass/fail judgment, simulated color, color evaluation, haze, liquid chromaticity, color bias
Measuring Time Single mode<2s
Repeatability ΔE*ab≤0.015

Spectral reflectance/transmittance≤0.1%

Inter-instrument Error XLAV ΔE*ab 0.2
Display 7-inch capacitive touch screen
Spectral Resolution 1.6nm
UV Measurement Including UV, 400nm cutoff, 420nm cutoff, 460nm cutoff
Transmission Measurement Specification Sample height and thickness: unlimited height, thickness≤50mm
Long Term Repeatability XLAV chromaticity value: standard deviation ΔE*ab within 0.015(Any temperature change at 20°C±10°C, measure the white calibration plate every hour within 24 hours)
Data Storage  8 GB 
Language Simplified Chinese, English, Traditional Chinese, Russian, Spanish, Portuguese, Japanese, Thai, Korean, German, French, Polish
Operation 

System

Android
Operating Temperature&Humidity Range 5~40℃(40~104F), relative humidity 80%(at 35℃) no condensation
Storage Temperature&Humidity Range -20~45℃(-4~113F), relative humidity 80%(at 35℃) no condensation
Standard Accessories Power adapter, data cable, transmission fixture, USB flash disk, Black cavity, white board, green board, 30mm aperture, 18mm aperture , 11mm aperture , 6mm aperture, support table, colorimetric dish, damping handle
Optional Accessories Heating Fixture for Transmittance, Vertical Support and Pneumatic ram for downward measurement, Reflectance fixture for small size sample, Reflectance Glass Cell Support, Corrosion-Resistant Protective Plate(non-removable), Sample Holder for Fiber, Film Fixture, Transmittance Fixture for Small Aperture, Trolley Case, European Standard Plug, American Standard Plug
Interface RS-232, USB, USB-B
Other Function 1. Camera to view measurement area

2. Support horizontal,vertical and downward measurement method (need optional accessories to support for downward measurement)

3. Auto humidity and temperature compensation function

Power Supply AC100~240V, 50/60Hz, DC regulated power supply
Packing Size 450*570*470mm
Gross Weight 16kg
The details

Specifications

Model
BK-GS821
Optical Geometry
Reflectance: d/8(Diffused illumination, 8-degree viewing)Simultaneous measurement of SCI/SCE, conform to CIE No.15, GB/T 3978, GB 2893, GB/T 18833, ISO7724/1, DIN5033 Teil7, JIS Z8722 condition C, ASTM E1164, ASTM-D1003-07Transmittance d/0(Diffused illumination, 0-degree viewing)
Integrating Sphere Size
152mm
Light Source
Pulse Xenon lamp and LED lamp
Spectrophotometric Mode
Concave grating
Sensor
Silicon photodiode array
Wavelength Range
360~780nm
Wavelength Interval
10nm
Measured Reflectance Range
0~200%, resolution 0.01%
Measuring Aperture
Reflectance: XLAV Φ25.4mm/Φ30mm, LAV Φ15mm/Φ18mm,MAV Φ8mm/Φ11mm, SAV Φ3mm/Φ6mm Users can customize the caliber, automatic identification of caliber switching Transmittance: Φ17mm/Φ25mm
Color Space
CIE LAB, CIE LUV, LCh, Hunter Lab, Yxy, XYZ, Musell, s-RGB, βxy
Color Difference Formula
ΔE*ab, ΔE*CH, ΔE*uv, ΔE*cmc, ΔE*94, ΔE*00, ΔEab(Hunter), 555 color classification
Other Colorimetric Index
WI(ASTM E313-00, ASTM E313-73, CIE, ISO2470/R457, AATCC, Hunter, Taube Berger, Stensby), YI(ASTM D1925, ASTM E313-00, ASTM E313-73), Tint(ASTM E313-00), Metamerism index milm, stain fastness, color fastness, ISO brightness, R457, A density, T density, E density, M Density, APHA/Pt-Co/Hazen, Gardner, Saybolt, ASTM color, Haze, Total Transmittance, Opacity, Color Strength
Observer Angle
2° and 10°
Illuminant
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, ID50, ID65, LED-B1, LED-B2, LED-B3, LED-B4, LED-B5, LED-BH1, LED-RGB1, LED-V1, LED-V2
Displayed Data
Spectral data, spectral graph, chromaticity data, color difference data, color difference graph, pass/fail judgment, simulated color, color evaluation, haze, liquid chromaticity, color bias
Measuring Time
Single mode<2s
Repeatability
ΔE*ab≤0.015Spectral reflectance/transmittance≤0.1%
Inter-instrument Error
XLAV ΔE*ab 0.2
Display
7-inch capacitive touch screen
Spectral Resolution
1.6nm
UV Measurement
Including UV, 400nm cutoff, 420nm cutoff, 460nm cutoff
Transmission Measurement Specification
Sample height and thickness: unlimited height, thickness≤50mm
Long Term Repeatability
XLAV chromaticity value: standard deviation ΔE*ab within 0.015(Any temperature change at 20°C±10°C, measure the white calibration plate every hour within 24 hours)
Data Storage
8 GB
Language
Simplified Chinese, English, Traditional Chinese, Russian, Spanish, Portuguese, Japanese, Thai, Korean, German, French, Polish
Operation System
Android
Operating Temperature&Humidity Range
5~40℃(40~104F), relative humidity 80%(at 35℃) no condensation
Storage Temperature&Humidity Range
-20~45℃(-4~113F), relative humidity 80%(at 35℃) no condensation
Standard Accessories
Power adapter, data cable, transmission fixture, USB flash disk, Black cavity, white board, green board, 30mm aperture, 18mm aperture , 11mm aperture , 6mm aperture, support table, colorimetric dish, damping handle
Optional Accessories
Heating Fixture for Transmittance, Vertical Support and Pneumatic ram for downward measurement, Reflectance fixture for small size sample, Reflectance Glass Cell Support, Corrosion-Resistant Protective Plate(non-removable), Sample Holder for Fiber, Film Fixture, Transmittance Fixture for Small Aperture, Trolley Case, European Standard Plug, American Standard Plug
Interface
RS-232, USB, USB-B
Other Function
1. Camera to view measurement area2. Support horizontal,vertical and downward measurement method (need optional accessories to support for downward measurement)3. Auto humidity and temperature compensation function
Power Supply
AC100~240V, 50/60Hz, DC regulated power supply
Packing Size
450*570*470mm
Gross Weight
16kg
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