HunterLab ColorQuest XE Benchtop Spectrophotometer

Overview

The HunterLab ColorQuest XE is a high-precision benchtop spectrophotometer engineered for rigorous color measurement in both laboratory and production environments. Operating on the principle of double-beam spectral photometry, it employs a 256-element diode array detector coupled with a high-resolution concave holographic grating to deliver stable, reproducible spectral data across the visible spectrum (400–700 nm). Its d/8° integrating sphere geometry—compliant with CIE No. 15, ISO 7724-1, ASTM E308, and DIN 5033—enables standardized measurement of reflectance and transmittance under diffuse illumination and 8° viewing conditions. The instrument’s dual optical path architecture minimizes drift and enhances long-term stability, while the pulsed xenon lamp provides consistent D65 illumination without thermal load or spectral degradation over time—eliminating routine lamp replacement and ensuring traceable, repeatable results across shifts and instruments.

Key Features

• Robust d/8° integrating sphere (15.2 cm diameter) coated with Spectraflect®—a highly reflective, chemically inert, and photostable barium sulfate-based material certified for long-term BRDF stability.
• Automatic specular component control: seamless inclusion or exclusion of specular reflectance (SCI/SCE modes) via motorized baffle—critical for evaluating surface gloss influence on perceived color in coatings, plastics, and printed materials.
• Triple-aperture transmittance chamber with unobstructed access for liquid cells, film holders, and thick solid samples—designed to accommodate ASTM D1003-compliant haze and clarity measurements alongside APHA, Gardner, and Pt-Co color scales.
• Motorized aperture lens system enabling automatic switching between Large Area View (LAV), Small Area View (SAV), and Micro Area View (MAV) configurations—supporting spatially heterogeneous samples without manual reconfiguration.
• Dedicated tactile measurement button with integrated status LED for intuitive operation in glove-compatible or high-noise industrial settings.
• Ergonomic, tool-free sample clamp mechanism accommodating irregular geometries—from rigid plaques and woven textiles to flexible films and viscous liquids in standard cuvettes.

Sample Compatibility & Compliance

The ColorQuest XE measures opaque, translucent, and transparent solids and liquids—including powders, pastes, gels, and suspensions—across industries governed by strict color specification frameworks. It supports compliance with ISO 9001 quality management systems, ISO/IEC 17025 testing laboratory accreditation requirements, and FDA 21 CFR Part 11 when paired with HunterLab’s QualiScan™ software (with audit trail, electronic signatures, and user role management). Its spectral output meets the metrological criteria for ASTM D2244 (color difference calculation), ASTM E284 (standard terms), and USP (colorimetric analysis of pharmaceuticals). The instrument’s inter-instrument agreement (IIA) is validated per ASTM E2539, ensuring < 0.15 ΔE*ab variation across networked units—enabling reliable color transfer between R&D, QC, and global manufacturing sites.

Software & Data Management

Controlled via HunterLab’s QualiScan™ software (Windows-based), the ColorQuest XE supports full spectral data acquisition, real-time pass/fail evaluation against user-defined tolerances, and advanced color space reporting (CIELAB, CIELCh, CMYK, RGB, Hunter L,a,b). The software includes GLP/GMP-compliant features: secure user authentication, configurable audit trails, instrument calibration history logging, and export-ready reports compliant with ISO/IEC 17025 documentation standards. Raw spectral data (.spc files) are stored in ASCII format for third-party integration with LIMS, ERP, or statistical process control (SPC) platforms. Firmware updates and spectral calibration verification routines are performed locally without vendor dependency.

Applications

The ColorQuest XE serves as a primary color measurement platform in regulated and high-volume environments: textile dye lot verification per AATCC Evaluation Procedure 1; plastic pellet color consistency monitoring per ISO 11475; paint and coating formulation validation against automotive OEM specifications (e.g., GM 6091M, Ford CETP); food product hue and browning index assessment per AOAC 971.22; pharmaceutical tablet color uniformity per USP ; and paper brightness and yellowness tracking per TAPPI T452 and ISO 2470. Its ability to quantify turbidity (NTU), APHA/Pt-Co, and Gardner color scales makes it indispensable in chemical intermediates and water treatment QA workflows.

FAQ

What calibration standards are required for daily verification?
A white ceramic tile (certified to NIST-traceable reflectance) and a black trap are recommended for daily performance qualification per ASTM E308 Annex A3.
Can the ColorQuest XE measure metallic or pearlescent coatings?
Yes—when used with the optional multi-angle measurement module (not included with base configuration), it supports gonio-spectral evaluation per ASTM E2194 and ISO 18314-2.
Is the instrument suitable for GMP-regulated pharmaceutical labs?
Yes—when deployed with QualiScan™ in 21 CFR Part 11 mode, it satisfies electronic record and signature requirements for color release testing.
How often does the xenon lamp require replacement?
The pulsed xenon source is rated for ≥ 2 million flashes—typically exceeding 5 years of normal operation without degradation or recalibration impact.
Does the system support custom color formulas and batch matching?
Yes—QualiScan™ includes built-in formulation prediction tools compatible with industry-standard pigment databases and enables delta-E minimization algorithms for spectral match optimization.