Multi-function Spectrophotometer ST70-3NH

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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
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

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.

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.

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.

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.

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.

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.

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

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.

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).

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.

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.

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.

Model	ST70 spectrophotometer
Optical Geometry	D/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
Characteristic	Adopt 3nh TS series core technology, 5 measuring apertures for accurate color analysis and transmission in laboratory
Characteristic	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 Size	Φ40mm
Light Source	Combined full spectrum LED light source, UV light source
Spectrophotometric Mode	Flat Grating
Sensor	Silicon photodiode array (double row 32 groups)
Wavelength Range	360~780nm
Wavelength Interval	10nm
Measured Reflectance Range	0-200%
Measuring Aperture	5 apertures: MAV:Φ8mm/Φ10mm；SAV:Φ4mm/Φ5mm;SSAV:1x3mm
Specular Component	SCI&SCE
Color Space	CIE LAB,XYZ,Yxy,LCh,CIE LUV,s-RGB,HunterLab,βxy,DIN Lab99,Munsell(C/2)
Color Difference Formula	ΔEab,ΔEuv,ΔE94,ΔEcmc(2:1),ΔEcmc(1:1),ΔE00, DINΔE99,ΔE(Hunter)
Other Colorimetric Index	Spectral 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 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),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 Data	Spectrogram/Values, Samples Chromaticity Values, Color Difference Values/Graph, PASS/FAIL Result, Color simulation, Color Offset
Measuring Time	About 1.5s
Repeatability	Chromaticity value: MAV/SCI, within ΔE*ab 0.02 ( When a white calibration plate is measured 30 times at 5 second intervals after white calibration)
Repeatability	Spectral reflectance: MAV/SCI, Standard deviation within 0.08% (400 nm to 700 nm: within 0.18%)
Inter-instrument Error	MAV/SCI, Within ΔE*ab 0.15 (Average for 12 BCRA Series II color tiles)
Display Resolution	0.01
Measurement Mode	Single Measurement, Average Measurement(2-99times)
Locating Method	Camera Locating,stabilizer cross position
Dimension	LWH=129X76X217mm
Weight	Approx 600g
Battery	Li-ion battery, 8800 measurements within 8 hours
Illuminant Life Span	10 years, more than 1.5 million times measurements
Displayed Data	3.5-inch TFT color LCD, Capacitive Touch Screen
Data Port	USB, Bluetooth ® 5.0
Data Storage	Standard 1000 Pcs, Sample 30000 Pcs, APP/PC mass storage
Software Support	Andriod,IOS,Windows,Harmony OS,Wechat applets
Language	Simplified Chinese, English, traditional Chinese
Operating Environment	0~40℃, 0~85%RH (no condensing), Altitude < 2000m
Storage Environment	-20~50℃, 0~85%RH (no condensing)
Standard Accessory	Power 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 Accessory	Micro Printer, Powder Test Box
Notes	The specifications are subject to change without notice.

Our Valued Clients

FAQs About ST70 Portable Spectrophotometers

Standard light sources make sure that the results of color evaluations are comparable and consistent, no matter when and where the assessments are made, or the varying production runs.

Colorimeter calibration is indispensable for reliable quality control—ensuring measurement accuracy by compensating for component aging, environmental interference, and baseline drift. It standardizes data across devices/batches, maintains compliance with industry standards, and prevents costly rework from inaccurate color readings, making it critical for precision-driven industries like printing, food, plastics, textiles, paint and coatings.

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.

The ΔE (Delta E) formula of the CIELAB color space is usually used to measure color difference. The difference is measured in a colorimeter or spectrophotometer to gauge the level of perceptibility of the difference between two samples in terms of L*a*b*.

Yes, we offer free samples for test, you are welcome to order samples to experience our excellent quality and service.

Powder paint gloss levels are commonly classified as:

● Flat/Matte: 0–10 GU

● Satin: 10–40 GU

● Semi-Gloss: 40–70 GU

● Gloss: 70–85 GU

High Gloss: 85+ GU
These ranges can vary by manufacturer and application angle.

Multi-function Spectrophotometer ST70