HunterLab ColorQuest XE Benchtop Spectrophotometer

Overview

The HunterLab ColorQuest XE is a benchtop spectrophotometer engineered for precision color measurement across diverse industrial and laboratory environments. It operates on the principle of dual-beam spectral photometry with d/8° integrating sphere geometry—compliant with CIE, ASTM E308, ISO 7724, and USP standards—to deliver high-fidelity spectral data from 400 nm to 700 nm. Its pulsed xenon lamp provides stable, D65-illuminant–filtered illumination without thermal drift or warm-up delay, enabling rapid, repeatable measurements of reflectance, transmittance, and derived color indices. The instrument’s 256-element diode array detector coupled with a high-resolution concave holographic grating ensures wavelength accuracy of ±0.1 nm and effective bandwidth of 10 nm—critical for distinguishing subtle metamerism and batch-to-batch color variation in quality-critical applications.

Key Features

• Robust d/8° optical configuration with 152 mm integrating sphere coated in Spectraflect® for uniform diffuse illumination and high signal-to-noise ratio
• Auto-switching between Large Area View (LAV) and Small Area View (SAV) apertures—no manual alignment or recalibration required
• Simultaneous inclusion/exclusion of specular component (SCI/SCE) via motorized lens assembly, supporting both surface-appearance and material-intrinsic color evaluation
• Pulsed xenon light source with >1,000,000 flash lifetime—eliminates filament degradation, lamp aging effects, and intensity drift over time
• Sub-second measurement cycle (<1 s) with 3 s minimum inter-measurement interval, optimized for high-throughput production line integration
• Three-sided open transmission chamber accommodating irregular, thick, or multi-layered samples—including bottles, films, and molded plastics—without repositioning

Sample Compatibility & Compliance

The ColorQuest XE measures opaque, translucent, and transparent solids and liquids—including powders, pastes, gels, solutions, and molten polymers—without requiring sample dilution or specialized holders in most cases. Its optical design supports standardized reporting of CIE L*a*b*, L*C*h°, ΔE*ab, ΔE00, Yellowness Index (ASTM E313), Whiteness Index (CIE/ASTM E313, Ganz), APHA/Pt-Co/Hazen color, Gardner color, Saybolt color, turbidity (NTU), opacity, and haze—all traceable to NIST-calibrated standards. Instrument compliance includes ASTM D2244, D6290, D313, D5386; ISO 11664-4, 11664-6; and FDA-relevant 21 CFR Part 11 readiness when paired with QualiSoft™ software and audit-trail-enabled user accounts.

Software & Data Management

The system integrates with HunterLab’s QualiSoft™ software suite, which provides GLP/GMP-compliant data handling including electronic signatures, full audit trails, version-controlled method templates, and automated report generation (PDF/CSV/XLSX). All spectral scans are stored with metadata (operator ID, timestamp, instrument serial number, calibration history), and raw data export preserves full 10 nm interval spectral reflectance/transmittance curves (31 points from 400–700 nm). Software supports statistical process control (SPC) charting, tolerance zone mapping, pass/fail decision logic per AQL levels, and seamless export to LIMS or MES platforms via ODBC or REST API.

Applications

This spectrophotometer serves as a reference-grade tool in R&D labs and QC departments across regulated and non-regulated sectors. In coatings and ink manufacturing, it validates batch consistency against master standards under multiple illuminants. In pharmaceutical solid-dosage production, it quantifies tablet film-coat uniformity and excipient color drift per USP . In food & beverage, it monitors juice clarity (turbidity), caramel color intensity (APHA), and dairy product whiteness. In plastics and textiles, it verifies color match across injection-molded parts, spun fibers, and dyed fabrics—even under varying substrate translucency. Its ability to decouple specular and diffuse components makes it indispensable for evaluating metallic, pearlescent, and textured finishes where appearance depends on both pigment and surface topography.

FAQ

Does the ColorQuest XE support measurement of fluorescent or phosphorescent samples?
Yes—it captures full spectral data under pulsed xenon illumination, enabling calculation of fluorescence-corrected color values when used with optional UV-filtered calibration and appropriate reference standards.
Can it be integrated into an automated production line?
Yes—via RS-232, USB, or Ethernet interfaces, with programmable trigger inputs and digital I/O for PLC synchronization and real-time pass/fail output signaling.
Is calibration traceable to NIST standards?
All factory calibrations are performed using NIST-traceable ceramic tiles and liquid standards; users receive a Certificate of Calibration with uncertainty values per ISO/IEC 17025 guidelines.
What maintenance is required beyond routine calibration verification?
No consumables or scheduled lamp replacement—xenon flash tube life exceeds one million cycles; only annual verification of sphere coating integrity and port alignment is recommended.
Does it comply with FDA 21 CFR Part 11 requirements?
When deployed with QualiSoft™ in validated mode—including role-based access control, electronic signatures, and immutable audit logs—the system meets predicate rule requirements for electronic records and signatures in regulated environments.