ST-17 Egg shell meat product color tester portable
The ST-17 egg shell (meat product) colorimeter utilizes automatic calibration and boasts over 30 measurement parameters and 26 standard light sources. This egg shell colorimeter can automatically calibrate and eliminate gloss measurement, while simultaneously measuring 30 indicators such as whiteness and yellowness. It exhibits excellent repeatability and is certified by the metrology institute.
Eggshells come in various colors, including white, light brown, brown, dark brown, and green. Some people prefer red eggshells, while others favor green eggshells, believing them to have higher nutritional value. The color of an eggshell originates from the final processing stage of the egg within the reproductive tract of the hen - the pigment secreted by the uterus epithelium. For instance, porphyrin provides the brown color, while biliverdin gives the green hue. The specific pigment secreted primarily depends on the genotype of the hen. Additionally, it is influenced by acquired factors such as the hen's diet and health. The age and health status of the hen also exert a certain degree of influence on the color of the eggshell.
Technical Specifications
| Measurement setup |
D/8-SCI+SCE (diffuse illumination, 8° directional reception, including removal of specular reflection) |
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Measurement repeatability/stability
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Standard deviation value ΔE*ab ≤ 0.04 |
| Average value dE*ab ≤ 0.05 |
| Maximum value dE*ab ≤ 0.08 |
| (After calibrating the whiteboard, measure it 30 times at 5-second intervals) |
| Difference between stations |
ΔE*ab≤0.4 |
| Display accuracy |
0.01 |
| Measurement/Illumination Aperture |
Φ4mm |
| Measurement metrics |
Spectral reflectance, CIE-Lab, CIE-LCh, HunterLab, CIE-Luv, XYZ, Yxy, RGB, Color difference(ΔE*ab, ΔE*cmc, ΔE*94, ΔE*00), Whiteness(ASTM E313-00, ASTM E313-73, CIE/ISO, AATCC, Hunter, TaubeBergerStensby),
Yellow Index(ASTM D1925, ASTM E313-00, ASTM E313-73), Blackness(My, dM)
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| Lighting 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 |
| Illumination source |
LED |
| Measurement and observation method |
Visual inspection |
| Software support |
Windows |
| Accuracy guarantee |
Ensure first-level measurement qualification |
| Field of view angle |
2°, 10° |
| Integrating sphere diameter |
40mm |
| Standard |
CIE No.15, GB/T 3978, GB 2893, GB/T 18833, ISO7724-1, ASTM E1164, DIN5033 Teil7 |
| Spectral method |
Integrated optical device |
| Sensor |
CMOS sensor |
| Wavelength spacing |
10nm |
| Wavelength range |
400 - 700nm |
| Reflectance measurement range |
0-200% |
| Reflectance resolution |
0.01% |
| Measurement time |
approximately 1s |
| Interface |
USB |
| Screen |
IPS full-color screen, 2.4 inches |
| Battery capacity |
Capable of continuous measurement for 8000 times on a single charge, 3.7V/3000mAh |
| Light source lifespan |
10 years or 1 million cycles |
| Language |
Simplified Chinese, English |
| Storage |
100 standard samples |
Note: The appearance pictures, dimensions, volume and weight of the instrument are for reference only. If there are any updates to the instrument, they may be slight changes without prior notice.
Shandong Shengtai Instrument Co., Ltd. provides the following quality assurance for the instruments sold to you:
----The instruments and materials provided are brand new, comply with national quality standards, and come with manufacturer's certification;
----The materials and main components provided meet the technical requirements specified in the technical documentation;
----The warranty period for the entire equipment is one year (excluding normal wear and tear of consumable parts).
----We are responsible for free maintenance of any instrument quality issues that arise during the warranty period. If the equipment malfunctions due to the user's responsibility, we will provide maintenance at a reasonable fee.
----Lifetime discounted supply of parts for equipment, and lifetime maintenance and repair of the entire machine.
----After the warranty period expires, if the user requires maintenance and technical services, we will only charge for the cost.
Product Tags:
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400 ～ 700nm Wavelength Egg Shell Meat Product Color Tester Aperture Φ4mm ASTM E1164 Images
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