HunterLab Agera L2 Benchtop Color Spectrophotometer with 0/45° Geometry
| Brand | HunterLab |
|---|---|
| Origin | USA |
| Manufacturer Authorization | Authorized Distributor |
| Import Status | Imported |
| Model | Agera L2 |
| Product Category | Color Difference Meter |
| Instrument Type | Benchtop |
| Optical Geometry | 0/45° Integrating Sphere |
| Light Source | LED |
| Spectral Range | 360–700 nm |
| Repeatability | ΔE* < 0.03 (CIE L*a*b* scale) |
Overview
The HunterLab Agera L₂ is a high-precision benchtop spectrophotometer engineered for rigorous color measurement across industrial quality control, R&D, and regulatory-compliant environments. Operating on the CIE-standard 0/45° optical geometry—where illumination is directed at 0° normal incidence and detection occurs at 45°—the instrument eliminates directional bias from surface texture, gloss, or anisotropic structure. This configuration aligns with ASTM D6290, ISO 11664-4, and CIE Publication 15:2018, ensuring metrological traceability and inter-laboratory comparability. Unlike diffuse/8° or d/0 instruments, the 0/45° design delivers superior accuracy for textured, patterned, or directional substrates such as woven textiles, extruded plastics, molded composites, and coated papers—materials where specular components and surface topography significantly influence perceived color.
Key Features
- Large 50.8 mm (2-inch) aperture: Optimized to meet ASTM D6290’s preferred aperture size for minimizing sampling variance in heterogeneous or structured materials—including virgin and recycled polymers, nonwovens, leather, and architectural coatings.
- Ultra-Dark Mode: A proprietary measurement algorithm and enhanced signal-to-noise architecture enable stable, repeatable readings on low-reflectance samples (e.g., black masterbatches, carbon-filled compounds, matte-finish automotive interiors), where conventional instruments exhibit elevated noise floors or saturation artifacts.
- LED-based illumination system: Provides stable, cool-running, long-life (≥100,000 hr) spectral output without UV degradation or thermal drift—critical for daily calibration stability and long-term instrument consistency.
- Full-spectrum acquisition from 360 nm to 700 nm at 10 nm intervals: Captures both visible chromaticity and near-UV reflectance relevant to fluorescence whitening agent (FWA) quantification and yellowing index (YI E313, ASTM D1925) calculations.
- Built-in calibration verification with NIST-traceable ceramic tile standards: Supports automated pass/fail checks per ISO 17025 internal quality control protocols.
Sample Compatibility & Compliance
The Agera L₂ accommodates flat, rigid, and semi-flexible samples up to 25 mm thick, with optional fixtures for curved surfaces (e.g., automotive trim, bottle caps). Its 0/45° geometry inherently suppresses gloss-related metamerism, making it suitable for QC workflows governed by ISO 9001, IATF 16949, and FDA-regulated color release testing (e.g., pharmaceutical packaging, medical device housings). The instrument supports full compliance with USP (Color Measurement of Pharmaceutical Packaging), ASTM D2244 (Standard Practice for Calculation of Color Differences), and ISO 11664-6 (CIE Whiteness Index). Data integrity meets 21 CFR Part 11 requirements when paired with HunterLab’s QualiSight™ software, including electronic signatures, audit trails, and role-based access control.
Software & Data Management
QualiSight™ v5.2 software provides integrated instrument control, spectral analysis, tolerance management (ΔL*, Δa*, Δb*, ΔE*₀₀), and multi-parameter reporting (Whiteness Index WI CIE, Yellowness Index YI E313 & ASTM D1925, Tint, Opacity, Haze). All raw spectra are stored in vendor-neutral XML format, enabling third-party integration with LIMS (e.g., LabWare, Thermo Fisher SampleManager) and ERP systems via RESTful API. Audit trails log every measurement event—including operator ID, timestamp, calibration status, and environmental metadata (ambient temperature/humidity if sensor-equipped)—supporting GLP/GMP validation and FDA inspection readiness.
Applications
- Plastics & Polymers: Quantifying batch-to-batch color consistency in injection-molded parts, extruded profiles, and recycled resin pellets—especially critical for automotive interior trims and food-contact packaging.
- Textiles & Apparel: Measuring dye lot uniformity across woven, knitted, and nonwoven fabrics under standardized illuminants (D65, A, F2).
- Paints & Coatings: Validating color match for OEM automotive refinish, architectural paints, and powder coatings—leveraging the large aperture to average micro-texture effects.
- Food & Beverage: Assessing natural pigment stability in dairy powders, confectionery coatings, and dried fruit—using YI and WI metrics to track oxidation and Maillard reaction progression.
- Pharmaceuticals: Verifying capsule shell, tablet coating, and primary packaging color per USP monographs and ICH Q5C guidelines.
FAQ
What is the difference between 0/45° and d/0 geometry in color measurement?
0/45° excludes specular reflectance and is ideal for textured or directional samples; d/0 integrates total reflectance (including specular) and is suited for smooth, glossy surfaces.
Does the Agera L₂ support measurement of translucent or transparent samples?
No—it is optimized for opaque and semi-opaque solid samples. For transparent liquids or films, HunterLab’s UltraScan VIS or MiniScan EZ series is recommended.
Can the Ultra-Dark Mode be used with all color scales?
Yes—YI, WI, L*a*b*, and custom indices are all calculated from the same high-SNR spectral data acquired in Ultra-Dark Mode.
Is firmware upgrade supported remotely?
Yes—via secure HTTPS connection through QualiSight™; updates include new compliance templates, spectral interpolation algorithms, and calibration enhancements.
How often must the instrument be calibrated?
Daily user verification with supplied calibration tile is required; full recalibration by certified service technician is recommended annually or after impact/movement.
