HunterLab ColorQuest XE Benchtop Spectrophotometer

Overview

The HunterLab ColorQuest XE is a precision-engineered benchtop spectrophotometer designed for rigorous color measurement and quantitative optical analysis in both laboratory and production environments. Built upon a dual-beam spectral photometry architecture, it employs a high-stability pulsed xenon lamp—optically filtered to closely emulate the CIE standard illuminant D65—and a 256-element diode array detector coupled with a high-resolution concave holographic grating. This optical configuration ensures consistent spectral acquisition across the visible range (400–700 nm) with wavelength accuracy of ±0.1 nm and effective bandwidth of 10 nm (triangular). The 152 mm integrating sphere, internally coated with Spectraflect®—a barium sulfate-based diffuse reflectance material certified for stability and uniformity—enables accurate measurement of reflectance and transmittance under d/8° geometry per ISO 7724-1, ASTM E308, and CIE No. 15. Its robust mechanical design supports continuous operation in quality control labs subject to GLP or GMP compliance requirements.

Key Features

• Dual-beam optical path architecture minimizes drift and enhances long-term measurement stability.
• Automated aperture selection (LAV/SAV/MAV) via motorized lens turret—no manual alignment required.
• Real-time specular component compensation: auto-inclusion or exclusion of specular reflectance per ISO 27677 and ASTM E2539.
• Pulsed xenon light source delivers >1,000,000 flashes lifetime; field-replaceable without recalibration.
• Three-sided open transmission chamber accommodates rigid solids, films, bottles, and cuvettes for both direct and total transmittance measurement.
• High-speed acquisition: full spectral scan completed in under 1 second; minimum inter-measurement interval of 3 seconds enables throughput-oriented workflows.
• Integrated thermal management system maintains detector and optical path at stable operating temperature, critical for low-noise photometric resolution (0.003%).

Sample Compatibility & Compliance

The ColorQuest XE measures opaque, translucent, and transparent samples—including powders, pellets, liquids, gels, coatings, and molded plastics—without requiring sample reconfiguration between reflectance and transmittance modes. Its standardized apertures comply with ISO 5-4 (aperture definitions) and ASTM D2244 (color difference calculation). Reflectance measurements conform to ISO 7724-1 (d/8° geometry), while transmittance protocols align with ASTM D1003 (haze), ASTM E308 (colorimetric computation), and ISO 2211 (APHA/YI/Whiteness indices). The instrument’s firmware and data handling support audit-ready operation: all measurements are timestamped, user-ID logged, and stored with full spectral data (10 nm reporting interval), enabling traceability per FDA 21 CFR Part 11 when deployed with compliant software.

Software & Data Management

Operated via HunterLab’s Universal Software Suite (v5.x or later), the ColorQuest XE supports method-driven workflows, custom index generation (e.g., Yellowness Index ASTM E313, Whiteness Index CIE/ISO 11475), and multi-instrument network synchronization. Data export formats include CSV, XML, and ASTM E2973-compliant .qtx files. The software enforces role-based access control, electronic signatures, and full audit trail functionality—including parameter changes, calibration events, and user logins—meeting GLP, ISO/IEC 17025, and pharmaceutical QC documentation standards. Optional IQ/OQ/PQ validation packages are available for regulated industries.

Applications

The ColorQuest XE serves as a primary color measurement platform across diverse sectors: in polymer manufacturing, it quantifies batch-to-batch hue consistency and yellowing due to thermal degradation; in paint and ink formulation, it validates metamerism under multiple illuminants (D65, A, F2); in pharmaceutical packaging, it verifies opacity and clarity of blister foils per USP ; in beverage and chemical production, it reports APHA, Gardner, and Pt-Co color scales alongside turbidity (NTU) and haze (%). Its ability to compute CIE L*a*b*, ΔE*00, and spectral transmittance curves makes it suitable for R&D method development, supplier qualification, and release testing.

FAQ

What standards does the ColorQuest XE comply with for reflectance measurement?
It conforms to ISO 7724-1 (d/8° geometry), ASTM E308 (color computation), and CIE Publication 15 for spectral data processing.
Can the instrument measure liquid samples in transmission mode without dilution?
Yes—the three-sided open transmission chamber accepts standard 10 mm, 20 mm, and 50 mm pathlength cuvettes, supporting undiluted measurement of clear, hazy, or colored liquids.
Is spectral data stored with each measurement?
Yes—full 400–700 nm spectra (at 10 nm intervals) are embedded in every data record and exportable for third-party analysis.
Does the system support automated pass/fail evaluation against tolerance limits?
Yes—Universal Software allows definition of multi-parameter tolerances (e.g., L* ±0.3, a* ±0.2, b* ±0.2, YI ±0.5) with visual and audible alerts on deviation.
How is calibration verified and maintained?
Factory-calibrated using NIST-traceable standards; users perform daily verification with supplied ceramic tile and liquid standards; optional annual recalibration service includes full optical alignment and spectral validation report.