HunterLab UltraScan PRO Spectrophotometer

Overview

The HunterLab UltraScan PRO is a high-precision benchtop spectrophotometer engineered for rigorous color measurement, spectral analysis, and quantitative appearance evaluation across R&D, quality control, and production environments. Operating on the fundamental principle of diffuse/8° (d/8°) geometry with integrated sphere optics, it captures total reflectance—including both specular-included (SCI) and specular-excluded (SCE) modes—enabling consistent, geometry-independent color data in compliance with ISO 7724-1, ASTM E308, and CIE No. 15 standards. Its pulsed xenon lamp delivers stable, full-spectrum illumination from 350 nm to 1050 nm with no warm-up time, minimal thermal drift, and extended lamp life—critical for long-term calibration stability and inter-instrument agreement. The instrument implements the foundational CIELAB (L*, a*, b*) color space originally developed by Dr. Richard S. Hunter at Hunter Associates Laboratory in the 1950s, and supports legacy Hunter L, a, b and modern metrics including ΔE*00, whiteness (CIE, Ganz, ASTM E313), yellowness (ASTM E313, D1925), and haze (ASTM D1003). Designed for traceable, auditable color workflows, the UltraScan PRO meets requirements for GLP and GMP-regulated industries where metrological integrity and data integrity are non-negotiable.

Key Features

• Benchtop architecture with robust aluminum housing and precision-machined optical path for long-term mechanical stability and vibration resistance
• High-resolution CCD array detector with 10-nm nominal bandwidth and photometric linearity < ±0.05% over 0–150% reflectance
• Dual-mode optical port enabling seamless switching between SCI and SCE measurements without hardware reconfiguration
• Automated calibration verification using NIST-traceable ceramic tile standards; optional real-time calibration monitoring via built-in reference channel
• Integrated temperature and humidity sensor for environmental compensation in spectral reflectance calculations
• Compliance-ready firmware supporting 21 CFR Part 11 audit trails, electronic signatures, and user-access-level permissions (Administrator, Operator, Reviewer)

Sample Compatibility & Compliance

The UltraScan PRO accommodates solid, liquid, paste, and powder samples via standardized holders—including 25-mm and 50-mm sample cups, transmission cells (10–50 mm pathlength), and large-area flat or curved surface fixtures. It supports opaque, translucent, and transparent materials with automatic UV-filter selection for fluorescence correction. All optical components comply with RoHS directives, and electrical design conforms to IEC 61010-1 safety standards. Instrument validation documentation—including IQ/OQ/PQ protocols, as-found/as-left reports, and uncertainty budgets—meets ISO/IEC 17025 laboratory accreditation requirements. Regulatory alignment includes support for FDA color release testing (e.g., pharmaceutical film coatings per USP ), food colorant verification (FDA 21 CFR Part 73/74), and paint & coating qualification per ASTM D2244 and ISO 12647-2.

Software & Data Management

Controlled via Universal Software Suite (USS) v5.x, the UltraScan PRO enables method-driven measurement workflows, statistical process control (SPC) charting, tolerance mapping (ellipsoidal, rectangular, or custom polygonal), and multi-instrument network synchronization. Raw spectral data (350–1050 nm at 10-nm intervals) is stored in vendor-neutral XML format compliant with ASTM E2892. Data export options include CSV, PDF reports with embedded spectra, and direct integration into LIMS via ODBC or HL7 interfaces. Audit trail records capture timestamped operator ID, parameter changes, calibration events, and result modifications—with immutable storage enforced by write-once media or secure database logging. Software validation packages are available for regulated users requiring documented installation qualification (IQ) and operational qualification (OQ).

Applications

• Pharmaceutical: Quantitative color assessment of tablets, capsules, and excipients per USP , including batch-to-batch consistency and stability-indicating color shifts
• Food & Beverage: Objective evaluation of fruit pulp, dairy products, sauces, and confectionery against industry-specific color standards (e.g., AOAC 992.01, ICC 152)
• Plastics & Polymers: Measurement of yellowness index (YI) in polyolefins and degradation monitoring in PET resins under accelerated aging conditions
• Paper & Packaging: Whiteness, brightness (ISO 2470-1), and opacity measurement in coated and uncoated substrates
• Paints & Coatings: Metallic flake orientation analysis, gonioapparent effect quantification, and batch matching across OEM supply chains

FAQ

What is the difference between SCI and SCE measurement modes?
SCI (Specular Component Included) captures total reflectance, ideal for measuring colorant concentration and formulation development. SCE (Specular Component Excluded) excludes surface gloss effects, better representing visual appearance under typical viewing conditions.
Does the UltraScan PRO support third-party calibration standards?
Yes—it accepts NIST-traceable, certified reflectance tiles (e.g., BCRA Series II, LabSphere standards) and allows user-defined calibration sets with full uncertainty propagation reporting.
Can spectral data be exported for external multivariate analysis?
Yes—full 350–1050 nm reflectance/transmittance spectra are exportable in ASCII or XML format, compatible with chemometric platforms such as Unscrambler®, MATLAB®, and Python-based scikit-learn workflows.
Is remote instrument monitoring supported?
Via optional Ethernet/IP or Wi-Fi connectivity, USS supports real-time status dashboards, email alerts for calibration due dates, and secure web-based access for authorized personnel across global facilities.