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YL4668 Inline spectrophotometer

Elevate Color Precision for Industry-Leading Quality Assurance

YL4668 Spectrophotometer is a high-precision device for accurate color measurement and analysis, Professional-Grade Solution for Reflective Color Measurement & Matching. It enables precise spectral data collection across visible wavelengths, supporting color formulation, quality control, and standard creation in industries, Non-contact measure for liquids, pastes, powders and gels. 


Key Highlights

  • D/8 Optical Geometry

  • Non-contact measure for liquids, pastes, powders and gels;

  • 256-pixel dual-array CMOS image sensor;

  • Measurement speed of just 0.2 seconds, suited for on-line testing use

  • Good repeatability ΔEab ≤0.03; Inter-instrument Error ΔE*ab ≤0.2;

  • Ideal for cosmetics, fruits and vegetables, food hygiene, plastic electronics, paint, ink, small and odd-shaped samples color measuring

YL4668 Inline spectrophotometer Instructions Operating Manual YL4668 Inline spectrophotometer PDF
This YL4668 Instrument are Certified with
certify
1 Years Warranty (Additional support period of 3 years)

Proven technology, unmatched performance

The YL4668 spectrophotometer is a color measuring instrument that adopts D/8 (diffuse illumination, 8°direction reception, SCI includes specular reflection light) standard color measurement instrument, non-contact test between test probe and tested sample, to achieve liquid and sauce , powder and other non-contact precision color measurement. The simple probe design allows this product to be placed anywhere on the automated production line for precise color measurement and color quality control. It is widely used in cosmetics, fruits and vegetables, food hygiene, plastic electronics, paint and ink, printing, ceramics and other industries. It can be used for fluorescent sample measurement. Its unique innovative design can not only provide non-contact measurement solutions directly from the production line, but also ensure stable and high-precision measurement results.


Features of non-contact spectrophotometer


256-pixel dual-array CMOS image sensor

Higher optical resolution ensures the measurement speed, accuracy, stability and consistency of the instrument, mastering the core technology, and achieving complete compatibility on the same platform with international standards.

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Using full-spectrum LED light source

The full-spectrum LED light source ensures sufficient spectrum distribution in the visible light range, avoids the lack of LED spectra in specific bands, and ensures the accuracy of the instrument's measurement results and low-cost maintenance.

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Concave grating spectroscopy technology

Using concave grating spectroscopy technology, it has higher resolution and makes color measurement more accurate.

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Higher Performance, Higher quality

Using industrial-grade real-time processing MCU, supporting Bluetooth 5.0 transmission is more stable and reliable.

Multi-color measurement space and observation light source

Provide CIE LAB, XYZ, Yxy, LCh, CIE LUV, Musell, s-RGB, HunterLab, βxy, DIN Lab99 color space, and D65, A, C, D50, D55, D75, F1, F2 (CWF), F3, F4, F5, F6, F7 (DLF), F8, F9, F10 (TPL5), F11 (TL84), F12 (TL83/U30) multiple observation light sources can meet the special measurement requirements under different measurement conditions.

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High Efficient


YL4668 achieves the high precision and high measurement speed. So it is suited for on-line testing use. A complete measurement cycle only needs 200 milliseconds, and more than 400,000 samples can be measured per day. Help customers establish and improve an enterprise's color management system and quality control system.

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3NH offers a broad range of spectrophotometer models tailored to diverse applications in both industry and research. Additional instruments color measurements for chemicals, pharmaceutical products, cosmetics, petroleum products, aromas, biofuels, and more.



YL4668 Non-Contact Inline Spectrophotometer Technical Parameters

                Model                YL4668
                Optical Geometry                D/8 (diffuse illumination, 8° direction reception, SCI includes specular reflection light);
Comply with standard CIE No.15, GB/T 3978, GB 2893, GB/T 18833, ISO7724-1, ASTM E1164, DIN5033 Teil7, GB 2893, GB/T 18833
                Features                Non-contact test between test probe and tested sample, to achieve the non-contact precise color measurement of liquid, sauce, powder, etc. It is mainly used for accurate color measurement and quality control of automated production lines; the measurement time can be adjusted from 0.2 to 1.5 seconds, and the software functions can be customized (additional customization function needs to be evaluated).
                Light Source                Full spectrum LED light source, UV light source
                Spectrophotometric Mode                Concave Grating
                Sensor                256-pixel dual-array CMOS image sensor
                Wavelength Range                400~700nm, 10nm output
                Measured Reflectance Range                0-200%
                Measuring Aperture                Φ20mm (Φ10mm can be customized)
                Non-contact distance                3.0mm (±0.2mm)
                Sample height                Unlimited thickness, only test probes are used
                Distance adjustment method                Fixed height according to actual sample
                Measurement mode                Software customization function (additional customization function needs to be evaluated)
                Locating                Camera locating
                Color Space                CIE LAB,XYZ,Yxy,LCh,CIE LUV,Musell,s-RGB,HunterLab,βxy,DIN Lab99
                Color Difference Formula                ΔE*ab,ΔE*94,ΔE*cmc(2:1),ΔE*cmc(1:1),ΔE*00,ΔE（Hunter），DINΔE99
                Other Colorimetric Index                WI(ASTM E313，CIE/ISO,AATCC,Hunter)，
YI(ASTM D1925，ASTM 313),
Metamerism index MI,
Staining Fastness, Color Fastness, Strength, Opacity
                Observer Angle                2°/10°
                Illuminant                D65,A,C,D50,D55,D75, F1,F2(CWF),F3,F4,F5,F6, F7(DLF),F8,F9,F10(TPL5), F11(TL84),F12(TL83/U30)
                Displayed Data                Spectrogram/Values, Samples Chromaticity Values, Color Difference Values/Graph, Color simulation, pass/fail result, display tolerance can be set
                Measuring Time                As fast as 0.2 seconds
                Data Storage                Sample mode + quality control mode 18,000
                Continuous statistical mode 30,000, totaling no more than 48,000
                Repeatability                In the optimal measurement mode (when a single measurement time is 1.5 seconds):
Spectral reflectance: within 0.1% of standard deviation:
Chromaticity value: ΔE*ab within 0.03(After the instrument is warmed up and calibrated, measure the average value of the whiteboard 30 times at an interval of 5s)
                Inter-instrument Error                Within ΔE*ab 0.2(Measured average value of 12 tiles of BCRA series Ⅱ)
                Measurement method                Single measurement, average measurement (2~99 times)
                Dimension                200*200*160mm (test probe)
                Weight                About 3Kg (only test probe)
                Power                AC 24V, 3A Power adapter power supply
                Illuminant Life Span                5 years, more than 3 million times measurements
                Display                7-inch TFT color LCD, Capacitive Touch Screen
                Data Port                USB, Bluetooth®5.0
                Language                Simplified Chinese, Traditional Chinese, English
                Operating Environment                0~40℃, 0~85%RH (no condensation), altitude: less than 2000m
                Storage Environment                -20~50℃, 0~85%RH (no condensation)
                Standard Accessory                Power adapter, manual, data cable, standard calibration board, black calibration box
                Notes                This model is specially suitable for streamlined production lines, in-depth function customization will incur additional customization costs


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FAQs About YL4668 Spectrophotometer

Many people might answer "with the human eye", but this is actually not comprehensive. The human eye cannot accurately distinguish the colors of similar objects. Furthermore, everyone's perception of color varies. Therefore, people have developed color measurement tools based on the CIE color system. 

Currently, there are two main types of commonly used colorimeters, as follows: 

Colorimeter - It is an ideal choice for quality control (QC) on production lines, used to detect color differences. 

Spectrophotometer - It is suitable for the development of color characteristics and color analysis in laboratories.

At most of time, we have Spectrophotometer stock in the factory. Generally it is 1-3 working days after the payment confirmed. After shipped, we will email you the tracking number. You can check the shipping status of your order on the website. If you are in urgent need, we can consider making special arrangement for you.

The machine used to measure color is primarily called a colorimeter or spectrophotometer. 

Spectrophotometer: The most common and precise type. It analyzes light reflected/transmitted by an object across the visible spectrum to quantify color accurately. A spectrophotometer can measure colors on smooth or matte surfaces, as well as textured, glossy, mirror-like surfaces, and special effect colors. It measures the reflected light of a sample at a fixed angle (e.g., 45˚) or captures light reflected at all angles to calculate color measurements that closely match what the human eye perceives. Additionally, similar to how humans flip a sample to view colors from different angles, a spectrophotometer is suitable for measuring a variety of materials and surface characteristics. Widely used in industries like paint, textiles, plastics, Chemicals, Pharmaceuticals, and printing. 

Colorimeter: Also called photoelectric integrating colorimeter, a simpler, more cost-effective option. It measures color based on three primary colors (RGB) and is suitable for basic color matching needs. A photoelectric integrating colorimeter is a color measurement device based on the photoelectric integration principle. It directly measures the tristimulus values XYZ of an object's color using three color filters (red, green, blue) and silicon photocells as three sensors. The color measurement principle of this instrument imitates the human eye's mechanism of perceiving the three primary colors (red, green, blue). It corrects the relative spectral sensitivity of the detector through color filters to match the CIE-recommended spectral tristimulus value functions x(λ), y(λ), and z(λ).

Spectrocolorimeter: Combines the functions of spectrophotometers and colorimeters, offering both spectral data and color space values for comprehensive analysis.

For wallpaper color consistency & quality control (including solid-color, printed, textured, and embossed wallpapers), these 3nh spectrophotometers deliver optimal performance:


1. TS8560 Benchtop (Lab & R&D – Best Accuracy)

  • d/8° integrating sphere, SCI/SCE dual mode

  • ΔE*ab ≤ 0.01 (repeatability), IIA ≤ 0.1

  • Multi-apertures (Φ3/8/15/25mm) — ideal for large patterned wallpapers

  • UV control (for optical brighteners in paper)

  • Best for: Lab formulation, color standardization, batch-to-batch consistency

  • TS8560 Benchtop instrument


2. TS7700 Portable (Production & Field)

  • d/8° (SCI/SCE), ΔE*ab ≤ 0.02

  • Handheld, fast, non-destructive

  • Large aperture (Φ20mm) averages out texture/pattern unevenness

  • Best for: Production line checks, warehouse incoming inspection, on-site matching

  • TS7700 Portable spectrophotometer instrument

3. PS2080 Portable (Textured/Patterned Wallpapers)

  • d/8°, interchangeable apertures (Φ4/8mm + 1×3mm)

  • High stability for rough/embossed surfaces

  • UV included for fluorescent inks/papers

  • Best for: Complex printed, textured, or metallic-effect wallpapers

  • PS2080 Portable spectrophotometer

4. NS800 (Cost-Effective Routine QC)

  • 45/0 geometry, ΔE*ab ≤ 0.04

  • Touchscreen, easy operation

  • Best for: Uniform solid-color wallpapers, basic production QC

  • NS800 Hand Held Spectrophotometer

Short Recommendation

  • Top lab precision: TS8560

  • Best portable production: TS7700

  • Best for textured/patterned: PS2080

  • Economical routine QC: NS800

All ensure stable, repeatable color measurement for wallpaper rolls, panels, and printed patterns.


When detecting color differences, the first factors to consider when selecting a light source include its stability, directionality, lifespan, and the effectiveness of the ultimately obtained spectral curve. The illuminant of a colorimeter is a fixed bulb, such as a tungsten lamp，LED light or a long-life xenon lamp. However, for the same color sample, the results displayed by the instrument vary under different light sources. This is because different light sources cause different absorption and reflection of light on the sample, leading to differences in how both the human eye and the instrument perceive the color. 

In general, the D65 light source is used in the application of coil steel inks for construction. The D65 light source is equivalent to average daylight. Most coil steel inks for construction are used outdoors, and sunlight is regarded as the standard light source in outdoor environments. For household appliance coil steel inks, due to their usage characteristics, they are mostly used indoors. Therefore, the A standard light source is adopted for color measurement of samples based on indoor lighting conditions. The A light source is a carefully specified tungsten light source. Other light sources, such as fluorescent light sources, can be used in many types of applications. For example, some textile factories use fluorescent light sources. Therefore, a reasonable light source should be selected as the mutually recognized measurement method based on actual usage conditions and user requirements. Once agreed upon by both parties, color measurement must be conducted under the same conditions. This helps reduce unnecessary systematic errors and human errors, achieving the optimal consistency in color measurement. 

The 3nh high-precision spectrophotometric colorimeter adopts a combined LED light source with long lifespan and low power consumption, which includes UV (ultraviolet) and UV-excluded options. This design can meet the color difference detection needs of different users and supports the selection of multiple light source modes.

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