High Precision Non-destructive Measurement
The YL72 is an industrial-grade non-contact spectrophotometer with 45/0 optical geometry, designed for hands-free, contamination-free color measurement on liquids, pastes, powders, and delicate surfaces. It features a 7.5mm fixed non-contact distance, Φ8mm measuring aperture, and full-spectrum LED light source (400–700nm).
Key Highlights
Optical Geometry: 45/0(45 circular uniform illumination 0 reception);
Silicon photodiode array (20 groups in two rows)
Non-contact Distance: 7.5mm(±0.15mm)
Ultra-high precision with repeatability ΔE*ab≤0.015 and inter-instrument agreement ΔE*ab≤0.2
Seamless integration into automated production lines
Supports multiple color spaces and illuminants for food, cosmetics, coatings, printing, and automotive industries

3nh YL72 Online Non-contact Spectrophotometer adopts nano - spectral technology. It can quickly and non - destructively collect chromaticity data of liquids, pastes, powders, and vulnerable surfaces. Specifically tailored for automated production lines, it supports stable operation without human intervention. It combines high - speed measurement with diverse communication functions and can be flexibly installed on assembly lines and robotic arms. It monitors and transmits data in real - time, accurately enabling efficient quality control.
1. Non-contact measurement
YL72 adopts 45/0 optical structure and 7.5mm non-contact distance to realize non-contact measurement between the test probe and the sample to be measured, and is applied to precise color measurement of special samples such as liquid, paste, powder and fragile surface in automatic production line.
2. High-accuracy survey
The repeatability of YL72 chromaticity value is as high as ΔE*ab≤0.015, and the inter-station difference is controlled at ΔE*ab≤0.2, which ensures the consistency of measurement results of different batches and different equipment and redefines the industry quality standard.
3. High speed measurement
The measurement can be completed in 0.11 seconds at the earliest, supporting instrument triggering or online control triggering, flexibly setting single/multiple average measurement, seamless connection with production line, real-time online monitoring, and remarkable production efficiency.

1. Silicon photodiode array (20 groups in two rows) sensor
Double-row 20-group silicon photodiode array, with large-area design, strong light is unsaturated, low light sensitivity is high, spectral response range covers 400-700nm, 10nm output, reflectivity measurement range is 0-200%, and visible light information is accurately captured.
2. Nano-integrated spectral device
It has the ability of nano-scale light splitting, which can accurately separate light with different wavelengths and effectively guarantee the data accuracy of each band.
3. Full-spectrum long-life LED light source
The lighting source of the instrument covers the full spectrum of 400-700nm, and has sufficient spectral distribution in the visible range, which avoids the spectral loss of white LED and ensures the accuracy of the instrument measurement results. The service life of the light source is as long as 5 years, and it can support more than 3 million measurements.
4. Intelligent automatic calibration
Built-in intelligent automatic calibration function can quickly complete calibration after startup without manual intervention, ensuring long-term stable operation. With magnetic correction bracket, it is easy to operate and reduce human error.

1. Rich & Versatile Interfaces for Multi-Machine Collaborative Measurement
Equipped with USB, RJ45, RS485, RS232 and other mainstream interfaces, it supports multi-machine communication and cooperative work. It can be quickly connected to all kinds of automatic production lines, and a complete distributed color measurement system can be constructed to meet the multi-point color synchronous monitoring of complex production lines.
2. High protection level
IP66 protection level, waterproof and dustproof, and resistant to complex industrial environment.

Provide CIELAB, XYZ, YXY, LCH, CIELUV, Musell, S-RGB, Hunter LAB, β XY, DINLAB 99 color spaces, and a variety of observation light sources 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-RGB 1, LED-BH1.

It can be applied to the automatic production line requirements of food and beverage, cosmetics, printing, anodizing, coating, papermaking, automobile spraying line, textile production line, plastic production line and other industries, and can be directly installed on the assembly line or mechanical arm. Real-time monitoring of product color, synchronous transmission of data, providing immediate feedback for product quality.


YL72 series 45/0 Non-Contact Spectrophotometer | |
Product Model | YL72 |
Optical Geometry |
45/0(45 circular uniform illumination 0 reception); |
Features | The non-contact test between the test probe and the sample to be tested realizes the non-contact precise color measurement of liquid, paste, powder and fragile surface. It is mainly used in accurate color measurement and quality control of automatic production line; The measurement time can be as fast as 0.11 seconds. It can communicate with other systems through 485 or USB, and is equipped with upper computer software. |
Light Source | Full spectrum LED light source |
Splitting Mode | Nano-integrated spectral device |
Sensor | Silicon photodiode array (20 groups in two rows) |
Wavelength Range | 400~700nm, 10nm output |
Display Accuracy | 0.01 |
Reflectivity Resolution | 0.01% |
Reflectance Range | 0~200% |
Measuring Aperture | Φ8mm |
Non-contact Distance | 7.5mm(±0.15mm) |
Sample Height | The thickness is not limited, and only the test probe is used. |
Measurement and Observation Mode | Visual |
Measuring Time Interval | 1S |
Measurement Mode | Instrument trigger or online control trigger |
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 Chromaticity Indexes | Spectral reflectance, Wi (ASTM E313, CIE/ISO, AATCC, Hunter, ISO 2470/R457, Taube, Berger, Stensby), Tint (CIE/ISO),YI(ASTM D1925,ASTM 313),Metamerism index MI,Color fastness, color fastness, strength, coverage, blackness (My,dM), color density CMYK. |
Observer Angle | 2°/10° |
Illuminants | 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 | Data, sample chromaticity value, color difference value/graph, color simulation, qualified/unqualified results, display tolerance can be set. |
Measuring Time | The fastest time is 0.11 seconds (about 0.2 seconds) |
Calibrate | Intelligent automatic calibration |
Waterproof Grade | IP66 |
Repeatability | In the optimal test mode (when the single measurement time is 1.0 seconds): Chromaticity value: within ΔE*ab 0.015 (after preheating, measure the average value of the whiteboard for 30 times at intervals of 5s). |
Inter-station Difference | Within ΔE*ab 0.2 (average value of 12 color swatches of BCRA series Ⅱ) |
Accuracy Assurance | Ensure that the first-level measurement is qualified |
Measurement Method | Single measurement, average measurement (2~99 times) |
Dimension | 100*100*140mm |
Weight | About 1400g |
Power Supply | DC 24V,3A power adapter supplies power. |
Illuminant Life Span | More than 3 million measurements in 5 years |
Display | TFT true color 3.5inch |
Interface | USB, RS485, RS232, Ethernet, external trigger, analog signal output. |
Language | Simplified Chinese, traditional Chinese, English |
Operating Environment | 0~40℃, 0~85%RH (no condensation), altitude: below 2000m m |
Storage Environment | -20~50℃, 0~85%RH (no condensation) |
Standard Accessory | Power adapter, manual, USB cable, RJ45 network cable, RS485 multi-computer communication cable, RS232 communication cable, standard calibration board and black calibration box. |
Note: | It is subject to change without prior notice. |
FAQs About YL72 Benchtop Spectrophotometers
Yes, we can offer Spectrodensitometer quality certification issued by our lab free of charge, or issued by third-party international inspection Organizations with extra charge, please contact us for confirmation.
Our machine is packed by standard export wooden box, it won’t be damaged. We’ve delivered many testing machines abroad by sea or by air without damage.
Who are we? Threenh Technology: 22-Year Professional Color Measurement Solution Provider
Threenh Technology is a Chinese professional Measurement Instrument manufacturer with 22 years of industry experience, specializing in the field of color measurement and surface gloss detection. Integrating research and development, design, production, marketing, and sales, the company takes technological innovation as its core and is committed to providing global customers with high-precision and intelligent testing instruments as well as professional solutions.
A colorimeter is sufficient for basic, routine color checks, while a spectrophotometer is needed for precise, comprehensive color analysis—here’s the clear breakdown:
Simple color matching needs: Ideal for checking if a sample matches a predefined standard (e.g., basic paint batches, plastic parts with solid colors).
Consistent lighting conditions: Works well when measurements are done under fixed, standard light sources (no need to account for varied light effects).
Cost-sensitive, high-volume tasks: Perfect for production lines requiring fast, low-cost color checks without advanced data analysis.
Precise color quantification: Necessary for measuring Lab values (lightness, red-green, yellow-blue axes) or detecting subtle color deviations (critical for automotive coatings, high-end textiles).
Complex color analysis: Required for metallic/pearlescent finishes, transparent materials, or samples with gloss/texture variations.
Compliance and documentation: Essential when precise color data (spectral curves) is needed for quality audits, regulatory compliance, or brand color standardization.
For premier ink quality control (CMYK, spot colors, printing density, formulation & press-side QC), these 3nh spectrophotometers / spectrodensitometers stand above the rest:
45/0 ring illumination, ISO 5-4 / ISO 13655 (M0/M1/M2/M3)
Measures density (Status T/E/A/I), dot gain, trap, print contrast
ΔE*ab ≤ 0.03, density ≤ 0.01D
Small apertures (Φ2/4/8mm) for fine print & ink dots
Ideal: packaging, label, gravure, flexo, CMYK/spot color control
d/8° sphere, SCI/SCE, UV control
ΔE*ab ≤ 0.01 (repeatability), IIA ≤ 0.1
Multi-apertures (Φ3/8/15/25mm)
Best for: R&D, ink formulation, batch consistency, fluorescent inks
d/8° (SCI/SCE), ΔE*ab ≤ 0.02
Fast, handheld, large Φ20mm aperture
Best for: press-side checks, warehouse incoming ink, on-site matching
360–780nm, UV adjustable, dual CMOS
Reflection & transmission modes
Multi-aperture (Φ4/8/15/25.4mm)
Best for: high-precision lab R&D, transparent/fluorescent inks
Best press-side / print QC: YD5050
Top lab formulation: TS8560
Best portable production: TS7700
High-end lab R&D: YS6060
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