3nh TS7708 Handheld High-Precision Spectrophotometric Colorimeter
| Brand | 3nh |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Spectrophotometric Colorimeter |
| Instrument Type | Portable |
| Optical Geometry | d/8° Integrating Sphere |
| Illuminants | D65, A, C, D50, D55, D75, F1–F12 (including CWF, TL84, TL83/U30, TPL5, DLF) |
| Spectral Range | 400–700 nm |
| Repeatability | ΔE*ab ≤ 0.03 (MAV/SCI, after warm-up and calibration |
Overview
The 3nh TS7708 Handheld High-Precision Spectrophotometric Colorimeter is an ISO- and CIE-compliant portable spectrophotometer engineered for laboratory-grade color measurement in industrial quality control and R&D environments. It operates on the CIE-recommended d/8° geometry with dual-mode SCI (Specular Component Included) and SCE (Specular Component Excluded) measurement capability—ensuring accurate characterization of both diffuse and specular-reflected light. The instrument employs a precision 1000-line blazed grating optical system coupled with a dual-row 40-element silicon photodiode array sensor, delivering spectral resolution <10 nm across the visible spectrum (400–700 nm). Its full-spectrum LED illumination source provides uniform radiance without spectral gaps—critical for reliable measurement of fluorescent and non-fluorescent samples under standardized illuminants including D65, A, C, D50, and the full IEC 61000-4-11 F-series (F1–F12). Designed to meet ASTM E1164, ISO 7724-1, DIN 5033 Teil 7, GB/T 3978, and CIE Publication No. 15 requirements, the TS7708 supports traceable color evaluation in regulated sectors such as automotive coatings, medical device packaging, pharmaceutical excipient tinting, and food-grade plastics.
Key Features
- Triple-aperture configuration: Φ8 mm (flat & tip), Φ4 mm (flat & tip), and 1×3 mm rectangular port—enabling precise targeting of heterogeneous, textured, or small-area samples.
- Dual optical path design ensures simultaneous acquisition of SCI and SCE spectral data within ~3.2 seconds, eliminating sequential measurement drift.
- Integrated high-resolution capacitive touchscreen (3.5″ TFT) with real-time camera-assisted targeting—visually confirming measurement location prior to capture.
- UV-inclusive and UV-excluded measurement modes support fluorescence correction and compliance with ISO 11475 for optical brightener assessment.
- Industrial-grade lithium-ion battery (3.7 V / 5000 mAh) enables >6,000 measurements per charge; smart low-voltage alert and fast-charging circuitry extend service life.
- Ergonomic housing with anti-slip surface finish and optimized grip geometry—validated for extended daily use across QC lab and production floor settings.
- Calibration stability assured by proprietary reference white tile (certified for lifetime color stability) and integrated stabilization base to prevent contamination during recalibration.
Sample Compatibility & Compliance
The TS7708 accommodates opaque, translucent, and fluorescent materials—including molded polymers, metallic paints, woven textiles, ceramic glazes, printed films, and powder-coated substrates. Its 1×3 mm aperture facilitates edge and seam measurement in automotive trim and electronics housings, while the Φ4 mm tip enables accurate sampling of thread, yarn, and narrow-label surfaces. All optical and geometric specifications conform to international standards: CIE No. 15:2018 (Colorimetry), ISO 7724-1:2022 (Paints and varnishes — Color measurement), ASTM E1164-23 (Standard Practice for Obtaining Spectroscopic Data for Use in Color Calculations), and GB/T 18833-2019 (Retroreflective sheeting for road traffic signs). Instrument inter-instrument agreement is verified against BCRA Series II tiles (ΔE*ab ≤ 0.15), supporting multi-site color transfer protocols under GLP/GMP-aligned workflows.
Software & Data Management
The TS7708 interfaces via USB 2.0 or Bluetooth® 4.2 with SQCX Quality Control Software—a validated platform supporting audit-trail-enabled data management per FDA 21 CFR Part 11 requirements. SQCX enables spectral database creation, tolerance band definition (ellipsoidal or rectangular), pass/fail reporting with configurable thresholds, batch statistical analysis (X̄/R charts), and export to CSV, PDF, or XML for LIMS integration. Users may generate comparative reports across multiple illuminants and observers (2°/10°), compute whiteness index (ASTM E313, CIE Ganz), yellowness index (ASTM D1925), metamerism index (Mt), and colorfastness metrics (ISO 105-A02, A03). All raw spectral data (31-point reflectance at 10 nm intervals) and derived colorimetric values are stored locally (1,000 standards + 30,000 samples) with timestamp, operator ID, and environmental metadata (temperature/humidity).
Applications
The TS7708 serves as a primary color verification tool in pigment formulation labs, OEM paint shops, textile dye houses, and pharmaceutical manufacturing facilities where color consistency directly impacts regulatory compliance and brand integrity. In electronics, it verifies RGB chromaticity coordinates of display filters and backlight diffusers. In food packaging, it monitors batch-to-batch hue shift in laminated films under D65 and TL84 lighting—key for shelf-life color stability studies. Its portability and rapid measurement cycle (<1.5 s per mode) make it suitable for in-line process checks in printing presses and extrusion lines. Research applications include spectral modeling of structural color in biomimetic materials and validation of multispectral imaging algorithms.
FAQ
Does the TS7708 comply with FDA 21 CFR Part 11 for electronic records?
Yes—when used with SQCX software configured with user authentication, audit trails, and electronic signatures, the system meets Part 11 requirements for closed systems.
Can the TS7708 measure metallic or pearlescent finishes accurately?
It supports SCE mode for minimizing specular influence, but for gonioapparent materials, a dedicated multi-angle spectrophotometer is recommended per ASTM D2244.
What is the calibration interval recommendation under ISO/IEC 17025?
Annual factory recalibration is advised; field verification using certified white and black tiles should occur before each shift or measurement session.
Is spectral data export supported for third-party color simulation tools?
Yes—CSV exports include wavelength (nm) and %R values at 10 nm intervals from 400–700 nm, compatible with MATLAB, Python (NumPy), and commercial color rendering engines.
How is UV component controlled during fluorescent sample measurement?
A mechanically actuated UV filter enables toggling between UV-included and UV-excluded modes, allowing isolation of fluorescence contribution per CIE Technical Report 177:2006.
