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Intelligent Automatic Calibration Eggshell Color Tester Measure Whiteness Yellowness

Categories Food Testing Instruments
Brand Name: Shengtai Instrument
Model Number: ST-17
Place of Origin: China
MOQ: 1
Payment Terms: T/T
Supply Ability: 10000sets/year
Delivery Time: 7-15work-days
Packaging Details: wooden case
Measurement structure: D/8-SCI+SCE, (Diffuse illumination, receiving in 8 ° direction), including specular reflection light removal specular reflection light)
Inter station difference: ΔE*ab≤0.4
Display accuracy: 0.01
Measuring/lighting aperture: Φ4mm
Measurement indicators: Spectral reflectance,CIE-Lab,CIE-LCh,HunterLab,CIE-Luv,XYZ,Yxy,RGB, chromatic aberration (ΔE*ab,ΔE*cmc,ΔE*94,ΔE*00), whiteness (ASTM E313-00,ASTM E313-73,CIE/ISO,AATCC,Hunter,TaubeBergerStensby), Yellowness (ASTM D1925,ASTM E313-00,ASTM E313-73), Blackness
Light source conditions: 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
Lighting source: LED
Measurement and observation method: visual
calibration: Intelligent automatic calibration
Software Support: Windows
Accuracy Assurance: Ensure that the first level measurement is qualified
Field of view angle: 2°,10°
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Intelligent Automatic Calibration Eggshell Color Tester Measure Whiteness Yellowness

The eggshell color tester can measure whiteness, yellowness, etc. It can be intelligently and automatically calibrated


The ST-17 eggshell color tester adopts an automatic calibration method, with over 30 measurement parameters and 26 standard light sources; The eggshell color tester can be automatically calibrated and automatically removed for gloss measurement. It can also measure 30 measurement indicators such as whiteness and yellowness, with good repeatability and can be certified by the Institute of Metrology.


Eggshell colors include white, light brown, brown, dark brown, and cyan. Some people prefer red shell eggs, while others prefer green shell eggs, believing that they have higher nutritional value. The color of the egg shell comes from the final process of egg processing in the hen's reproductive tract - the pigment secreted by the uterine epithelium, such as egg porphyrin providing brown, and biliverdin providing green. The exact pigment secreted first depends on the genotype of the hen. Secondly, it depends on the acquired factors such as the diet and health of the hen. The age and health status of hens can also have a certain impact on egg shell color.


Technical parameters of eggshell color tester

Measurement structureD/8-SCI+SCE, (Diffuse illumination, receiving in 8 ° direction), including specular reflection light removal specular reflection light)
Measurement repeatability/stabilityChromaticity value
Standard deviation valueΔE*ab≤ 0.04
average value:dE*ab≤ 0.05
Maximum:dE*ab≤ 0.08
(Measure the whiteboard 30 times at 5-second intervals after whiteboard calibration)
Inter station differenceΔE*ab≤0.4
Display accuracy0.01
Measuring/lighting apertureΦ4mm
Measurement indicatorsSpectral reflectance,CIE-Lab,CIE-LCh,HunterLab,CIE-Luv,XYZ,Yxy,RGB,
chromatic aberration (ΔE*ab,ΔE*cmc,ΔE*94,ΔE*00), whiteness (ASTM E313-00,ASTM E313-73,CIE/ISO,AATCC,Hunter,TaubeBergerStensby), Yellowness (ASTM D1925,ASTM E313-00,ASTM E313-73), Blackness(My,dM)
Light source conditionsA,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
Lighting sourceLED
Measurement and observation methodvisual
calibrationIntelligent automatic calibration
Software SupportWindows
Accuracy AssuranceEnsure that the first level measurement is qualified
Field of view angle2°,10°
Integrating sphere diameter40mm
Compliance with standardsCompliance with standardsCIE No.15,GB/T 3978,GB 2893,GB/T 18833,ISO7724-1,ASTM E1164,DIN5033 Teil7
Spectroscopic methodIntegrated optics
sensorCMOS a sensor
Wavelength interval10nm
Wavelength range400-700nm
Reflectivity measurement range0-200%
Reflectivity resolution0.01%
Measurement timeAbout 1 second
joggleUSB
screenIPS Full color display, 2.4 inches
Battery capacity8000 consecutive measurements per charge, 3.7V/3000mAh
Light source lifetime1 million times in 10 years
languageSimplified Chinese, English
storage100 standard samples

Product Packing List


S/NNameQuantityUnitremarks
1Host1Set
2Whiteboard holder1piece
3Power cord1piece
4Fuse tube1pieceIn the safety seat 10A
5instruction manual1Copy
6Certificate of Conformity Warranty Card1copy
Cheap Intelligent Automatic Calibration Eggshell Color Tester Measure Whiteness Yellowness for sale
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