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Multi-function Spectrophotometer ST70

ST70 Portable Color Measurement Spectrophotometer

The ST70 spectrophotometer is a compact, portable color measurement device designed for fast and accurate color analysis. Equipped with a single-beam optical system, it offers reliable performance for basic color evaluation in various industries, widely used for testing the color of difference materials such as dental, printing, plastic, fruit, textile, car, etc.


Key Highlights

  • Double 32 array sensor

  • spectral range of 360–780 nm

  • Support standard color spaces like CIE LAB, XYZ, and s-RGB

  • Illuminating/Viewing Geometry: D/8 geometry (SCI/SCE)

  • Good repeatability (ΔEab ≤0.02) and inter-instrument agreement (ΔEab ≤0.15)

  • Read tooth color with absolute accuracy, Ideal for on-site color inspections in industries such as paints, plastics, and textiles

Multi-function Spectrophotometer ST70 Instructions Operating Manual Multi-function Spectrophotometer ST70 PDF
This ST70 Instrument are Certified with
certify
1 Years Warranty (Additional support period of 3 years)

Innovative instrument with high-precision spectrophotometer technology for the rapid, simple and extremely precise digital determination of samples color. The twin sister ST series of 3NH TS series is launched grandly, inherits the core technology of large-area array sensor and grating splitting in the field of color detection, and acutely analyzes the strong and weak light in 300-1100nm band. Our TS series has always been imitated, but never surpassed. TS series since its birth has been adhering to the quality first, with the purpose of quality, after years of continuous improvement, we can proudly say: ST series, let the color measurement is very accurate! In the future, 3nh will continue to practice the mission of ”specialized and innovation” enterprise and high-tech enterprise, overcome difficulties and continue to innovate on the road of testing instruments, so that our partners can have a wonderful high accuracy and quality measurement instrument.

     

Spectrophotometer ST70 is a spectrophotometer developed by 3NH TS series core technology, using built-in photodiode array (double 32 groups) sensors, imported whiteboard, while taking into account the measurement speed and convenience of operation. The repeatability delta E* AB of ST70 spectrophotometer is easily controlled within 0.02, and the Inter-instrument error delta E* AB is controlled within 0.15, to make the measurement more accurate. And the test data can be used for accurate color analysis and transmission in the laboratory.

     

Designed with Your Industry in Mind


Spectrophotometer ST70 is equipped with 5 kinds of measuring apertures, with wider adaptability, accurate color measurement and stable performance. It is used for accurate color measurement and quality control in dentistry, plastic electronics, paint ink, textile and garment printing and dyeing, printing, ceramics and other industries, and can be used for fluorescent sample measurement. 

Precise Tooth Shade Determination

3nh ST70 was developed for precise, fast and reliable shade determination of natural teeth and ceramic restorations. High-precision spectrophotometer technology accurately determines tooth shade. It does so objectively and reproducibly, regardless of ambient light conditions. For greater process reliability and fewer complaints.

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ST70 Features 

Large area photodiode array (dual 32 arrays) sensor

A larger area of double 26 array sensor, strong light saturation, weak light sensitivity and a wider spectrum response range, to ensure the instrument measurement speed, accuracy, stability and consistency, independent core technology, and international standards of the same platform, to achieve complete compatibility.

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Adopt D/8 structure and SCI/SCE mode

Spectrophotometer ST70 uses a widely international use D/8 optical structure, SCI/SCE (Specular Component Included/Specular Component Excluded) synthesis technology, support SCI+SCE at the same time fast measurement, test time about 1.5 seconds.

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Combination of full spectrum LED light source and UV light source

The use of 360-700nm full spectrum LED light source ensures sufficient spectral distribution in the visible light range, avoiding the spectral loss of specific bands, strong light will not be saturated, weak light is more sensitive, and fluorescence samples can be easily measured.

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Equipped with four kinds of measuring apertures


It is equipped with five types of measuring apertures, which can meet the measurement needs of different sizes of samples, and is suitable for precise color measurement of samples with different specifications and shapes. 

Spectrophotometer ST70 factory standard with 4mm flat aperture, 8mm flat aperture, 4mm flat aperture, 4mm tip aperture,1x3mm aperture, a total of four measuring apertures, to meet the measurement needs of most special samples.

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Camera positioning can clearly observe the measured area


The ST70 spectrophotometer has built-in camera. Through the real-time scene-taking of the camera, it can accurately determine whether the measured part of the object is the target center, which improves the measurement efficiency and accuracy.

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Non-contact automatic calibration, professional imported white board, more wear-resistant, dirty, stable


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Place the base safely to ensure that the whiteboard is not dirty.


Offer 10 kinds of color measurement space and 41 kinds of observation light source

Offer CIE LAB,XYZ,Yxy,LCh,CIE LUV, S-RGB, HunterLab, βxy, DIN Lab99, Munsell(C/2) color spaces, 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), B, U35, NBF, ID50, ID65, LED-B1, LED-B2, LED-B3, LED-B4, LED-B5, LED-BH1, LED-RGB1, LED-V1, LED-V2, LED-C2, LED-C3, LED-C5. It also can be customized light source (A total of 41 kinds of light source, Partially realize through the PC software /APP software), and can meet the special measurement requirements under different measurement conditions.

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Many color indexes


Spectrophotometer ST70 not only provides the commonly used color measurement, but also provide spectral reflectance, WI (ASTM E313, CIE/ISO, AATCC, Hunter, TaubeBergerStensby), YI (ASTM D1925, ASTM 313), Metamerism index of Mt, Staining Fastness, Color Fastness, Color Strength, Opacity, 8 degree gloss, 555 tone classification, Carbon (My,dM), color density CMYK(A,T,E,M), Tint, Munsel chroma index (part of the function is realized by PC software).




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Excellent instrument errors and repeatability

Results available in seconds. The result is clearly visible on the display within seconds. Ensure the consistency of measurement data of multiple equipment, to be used for color matching and accurate color transfer. A quick shade determination saves time and money.

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Support Huawei Harmony OS, Android, IOS, Wechat applets, Windows programs

This extensive system support allows seamless integration across various platforms, whether you're on a mobile device or at your desk, making data transfer and device interaction a breeze.

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Request information on ST70 Spectrophotometer Test Equipment


Are you planning to integrate one or more ST70 Spectrophotometer? Do you need advice or additional information? We suggest you fill out the contact form below, specifying your request. Our expert Test Equipment teams are available to respond as quickly as possible.



     

 

ModelST70 spectrophotometer
Optical GeometryD/8 (diffused illumination, 8-degree viewing angle)
SCI (specular component included)/SCE (specular component excluded) ; Include UV / excluded UV light source
Conforms to CIE No.15,GB/T 3978,GB 2893,GB/T 18833,ISO7724-1,ASTM E1164,DIN5033 Teil7
CharacteristicAdopt 3nh TS series core technology, 5 measuring apertures for accurate color analysis and transmission in laboratory
It is used for precise color measurement and quality control in plastic electronics, paint and ink, textile and garment printing and dyeing, printing, ceramics and other industries, and for fluorescent sample measurement.
Integrating Sphere SizeΦ40mm
Light SourceCombined full spectrum LED light source, UV light source
Spectrophotometric ModeFlat Grating
SensorSilicon photodiode array (double row 32 groups)
Wavelength Range360~780nm
Wavelength Interval10nm
Measured Reflectance Range0-200%
Measuring Aperture5 apertures: MAV:Φ8mm/Φ10mm；SAV:Φ4mm/Φ5mm;SSAV:1x3mm
Specular ComponentSCI&SCE
Color SpaceCIE LAB,XYZ,Yxy,LCh,CIE LUV,s-RGB,HunterLab,βxy,DIN Lab99,Munsell(C/2)
Color Difference FormulaΔE*ab,ΔE*uv,ΔE*94,ΔE*cmc(2:1),ΔE*cmc(1:1),ΔE*00, DINΔE99,ΔE(Hunter)
Other Colorimetric IndexSpectral reflectance,WI(ASTM E313,CIE/ISO, AATCC, Hunter, TaubeBergerStensby),
YI(ASTM D1925,ASTM E313),
Metamerism Index MI,
Staining Fastness, Color Fastness, Color Strength, Opacity,
8° Glossiness,555 tone classification, Carbon (My,dM), color density CMYK(A,T,E,M), Tint, Munsel chroma index (part of the function is realized by PC software)
Observer Angle2°/10°
IlluminantD65,A,C,D50,D55,D75, F1,F2(CWF),F3,F4,F5, F6,F7(DLF),F8 ,F9,F10(TPL5),F11(TL84),F12(TL83/U30),B,U35,NBF, ID50,ID65,LED-B1,LED-B2,LED-B3,LED-B4,LED-B5,LED-BH1,LED-RGB1,LED-V1,LED-V2,LED-C2,LED-C3,LED-C5, able to customized light source (total 41 kinds of light source, Partially realize through the PC software /APP software)
Displayed DataSpectrogram/Values, Samples Chromaticity Values, Color Difference Values/Graph, PASS/FAIL Result, Color simulation, Color Offset
Measuring TimeAbout 1.5s
RepeatabilityChromaticity value: MAV/SCI, within ΔE*ab 0.02 ( When a white calibration plate is measured 30 times at 5 second intervals after white calibration)
Spectral reflectance: MAV/SCI, Standard deviation within 0.08% (400 nm to 700 nm: within 0.18%)
Inter-instrument ErrorMAV/SCI, Within ΔE*ab 0.15 (Average for 12 BCRA Series II color tiles)
Display Resolution0.01
Measurement ModeSingle Measurement, Average Measurement(2-99times)
Locating MethodCamera Locating,stabilizer cross position
DimensionL*W*H=129X76X217mm
WeightApprox 600g
BatteryLi-ion battery, 8800 measurements within 8 hours
Illuminant Life Span10 years, more than 1.5 million times measurements
Displayed Data3.5-inch TFT color LCD, Capacitive Touch Screen
Data PortUSB, Bluetooth ® 5.0
Data StorageStandard 1000 Pcs, Sample 30000 Pcs, APP/PC mass storage
Software SupportAndroid,IOS,Windows,Harmony OS,Wechat applets
LanguageSimplified Chinese, English, traditional Chinese
Operating Environment0~40℃, 0~85%RH (no condensing), Altitude < 2000m
Storage Environment-20~50℃, 0~85%RH (no condensing)
Standard AccessoryPower Adapter, USB cable, User Guide, PC Software(Download from office website), White and Black Calibration Cavity, Protective Cover, Wrist strap, 8mm flat aperture, 8mm tip aperture, 4mm flat aperture, 4mm tip aperture,1x3mm tip aperture
Optional AccessoryMicro Printer, Powder Test Box
NotesThe specifications are subject to change without notice.


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FAQs About ST70 Portable Spectrophotometers

Threenh Technology with excellent after sale service, Generally, Our Spectrophotometer instrument warranty is one years(Additional support period of 3 years). Within the warranty period, we can offer technique support and parts to parts change, necessarily, our engineers may go to your place for better support. Our instrument have professional After-sales Dept, if you have any technical problem or question with our goods welcome to contact us.

The main instruments used to detect color are spectrophotometers and colorimeters (including photoelectric integrating colorimeters). 

Spectrophotometer: High-precision option. It analyzes the full visible light spectrum to measure color accurately. Suitable for complex scenarios like textured surfaces, special effect colors, or batch consistency checks in industries such as paint and coatings. 

Colorimeter (Photoelectric Integrating Colorimeter): Cost-effective and portable. It uses RGB filters to measure tristimulus values directly. Ideal for quick color difference detection in simple applications. Key Selection Tip Choose based on accuracy needs: use a spectrophotometer for high-precision color measurement, and a colorimeter for fast, basic color difference checks.


Colorimetry is a method that applies color intensity to ascertain the chemical concentrations. It is founded on Beer-Lambert Law, whereby the absorbance at a given wavelength is proportional to the concentration. It is popular in environmental and biochemical testing.

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.

Now our testing machines have been sold to more than 80 countries, like USA, Canada, Russia,UK, Italy, Germany, European , India, Pakistan, Philippine, Singapore, Malaysia,Thailand , Vietnam, Korea,Saudi Arabia,Brazil...and so on. We sell to the global market.

With centers in 20 countries, including India, Japan, USA, Germany, Singapore, China, South Korea, and Taiwan, Threenh Technology’ s service network aims to provide customers with convenient access to service globally. With over 1 million measuring instruments sold, our expertise is our greatest asset, enabling us to work with our customers on solutions to complex measurement challenges.

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