HunterLab UltraScan PRO Benchtop Spectrophotometer

Overview

The HunterLab UltraScan PRO is a high-precision benchtop spectrophotometer engineered for comprehensive color and spectral analysis across the ultraviolet, visible, and near-infrared (UV-VIS-NIR) regions. Operating on the principle of double-beam d/8° integrating sphere geometry, it delivers traceable, reproducible measurements compliant with CIE, ASTM E308, ISO 7724, and USP standards. Its extended spectral range—from 350 nm to 1050 nm—enables accurate characterization of both conventional colorants and optically complex materials, including fluorescent specimens containing optical brightening agents (OBAs), phosphorescent pigments, and NIR-responsive chromic systems (e.g., thermochromic, photochromic, and IR camouflage textiles). Unlike conventional colorimeters limited to visible wavelengths, the UltraScan PRO integrates real-time UV irradiance control under D65 illuminant conditions, ensuring metrologically sound tristimulus values (CIE XYZ, L*a*b*, L*C*h°) even for UV-excited fluorescence—critical for quality assurance in textile, plastics, coatings, and pharmaceutical packaging industries.

Key Features

• Full-spectrum d/8° integrating sphere optics with automatic specular component inclusion/exclusion (SCI/SCE) for flexible surface appearance evaluation
• Pulsed xenon lamp system with ≥1,000,000 flash lifetime—eliminates thermal drift and enables stable spectral output without warm-up delay
• Automated UV calibration and intensity regulation ensures consistent excitation energy at 365 nm and adjacent UV bands, essential for OBA quantification and fluorescence correction per ASTM D6290
• Three user-selectable measurement apertures (19 mm, 9 mm, 4 mm) accommodate macro-, meso-, and micro-scale samples—including yarns, thin films, and printed substrates
• Dedicated viewing mirror and LED alignment guide verify complete aperture coverage prior to measurement, minimizing stray light error
• Large dual-access transmission compartment (80 mm path length) supports liquid cells, solid plates, and laminated composites in both transmittance and reflectance modes
• Integrated sample illumination ring provides uniform, shadow-free preview lighting aligned with the measurement field of view

Sample Compatibility & Compliance

The UltraScan PRO accommodates solids (opaque, translucent, textured), liquids (clear, turbid, colored), powders, pastes, and gels—without requiring custom fixtures. Its robust mechanical design meets IEC 61000-4 electromagnetic compatibility requirements and operates within Class II laser safety guidelines (IEC 60825-1). Data integrity conforms to FDA 21 CFR Part 11 when paired with HunterLink software, supporting audit trails, electronic signatures, and role-based access control. Instrument validation documentation aligns with IQ/OQ/PQ protocols per ISO/IEC 17025 and ASTM E2535 for laboratory accreditation. All spectral data are reported in absolute reflectance/transmittance (%) with NIST-traceable wavelength calibration.

Software & Data Management

The UltraScan PRO interfaces natively with HunterLab’s proprietary EasyMatch QC and Universal Software Suite. These platforms support advanced color difference analysis (ΔE*ab, ΔE00, ΔEcmc), spectral comparison (SPD overlays), batch trend monitoring, pass/fail tolerancing with multi-parameter limits, and automated report generation (PDF, CSV, XML). Spectral data export includes full 1-nm interpolated datasets (350–1050 nm), enabling third-party chemometric modeling (e.g., PCA, PLS regression) in MATLAB or Python environments. Cloud synchronization via HunterCloud allows secure cross-site data sharing while maintaining local data sovereignty and encryption at rest (AES-256).

Applications

• Textile & Apparel: Quantifying OBA contribution in white fabrics; evaluating NIR reflectance of military camouflage; monitoring dye lot consistency under metamerism-critical lighting
• Plastics & Polymers: Measuring heat-induced chromism in smart packaging; validating pigment dispersion homogeneity in injection-molded parts
• Pharmaceuticals: Assessing color stability of coated tablets under photostability testing (ICH Q1B); verifying NIR spectral fingerprints of API-excipient blends
• Paints & Coatings: Characterizing pearlescent and interference pigments; calibrating spectral gloss effects in automotive OEM finishes
• Academic Research: Supporting fundamental studies in photophysics, plasmonic nanomaterials, and bio-inspired structural color

FAQ

Does the UltraScan PRO comply with ISO/IEC 17025 for accredited laboratories?
Yes—when operated with documented calibration procedures, certified reference materials (e.g., NIST SRM 2035), and validated software configurations, it satisfies measurement uncertainty requirements for ISO/IEC 17025 Clause 6.4.
Can it measure fluorescence quantum yield?
No—it measures relative spectral radiance under controlled UV excitation but does not provide absolute quantum efficiency; dedicated fluorometers are required for yield quantification.
Is the 1050 nm upper limit extendable via firmware update?
No—the cutoff is defined by the silicon photodiode array’s inherent responsivity limit; hardware modification is not supported.
How is UV irradiance calibrated during routine operation?
A built-in deuterium reference lamp and internal UV photodiode perform daily self-checks; NIST-traceable UV calibration tiles (e.g., HunterLab UV-STD-1) are used for periodic verification.
What sample thickness limits apply in transmission mode?
For optimal signal-to-noise ratio, liquid samples should be 1–10 mm thick in standard cuvettes; solid transmission requires ≤80 mm path length and ≥85% transmittance at 1050 nm to avoid detector saturation.