HunterLab Agera Accessory Kit for Benchtop Spectrophotometric Color Measurement

Overview

The HunterLab Agera Accessory Kit is a comprehensive suite of precision-engineered components designed exclusively for use with the HunterLab Agera benchtop spectrophotometer—a high-accuracy, d/8° integrating sphere-based color measurement system operating across the visible spectrum (400–700 nm). Engineered to support rigorous color quality control in regulated and research-intensive environments, this accessory set enables traceable calibration, standardized sample presentation, and metrologically sound evaluation of diverse material classes—including opaque solids, translucent liquids, UV-brightened substrates, and gloss-sensitive surfaces. Each component adheres to internationally recognized measurement standards: white calibration tiles are certified traceable to NIST SRM 2020; gloss diagnostic plates comply with ASTM D523 and ISO 2813 angular reflectance specifications; and the UV fluorescence standard is validated against Hohenstein Institute reference materials in Bönnigheim, Germany—ensuring consistency with CIE Illuminant D65 spectral power distribution, particularly critical when quantifying optical brightening agents (OBAs) in paper, textiles, and plastics.

Key Features

• NIST-traceable white calibration tile with accompanying reflectance data file and documented replacement protocol—enabling instrument recalibration while preserving long-term measurement stability.
• Gloss-standardized black glass reference plate, certified per ASTM D523 and ISO 2813 for specular gloss assessment at 20°, 60°, and 85° geometries—facilitating concurrent color and surface appearance evaluation.
• Three-tier aperture mask set (XL: 51 mm, L: 25.4 mm, M: 16.9 mm) for controlled measurement area selection, minimizing edge effects and ensuring geometric conformity across heterogeneous or patterned samples.
• Dedicated gloss diagnostic plate for routine verification of 60° specular reflectance performance—supporting GLP-compliant instrument qualification and periodic verification logs.
• 64 mm (2.5 in) diameter sample cup with integrated silicone cup pad—designed to eliminate air gaps and ensure consistent path-length positioning for liquid and semi-solid measurements.
• Hohenstein-certified UV-fluorescent white standard (100 × 100 mm), calibrated for Ganz whiteness and UV irradiance equivalence to CIE D65—essential for accurate OBA compensation in regulatory submissions (e.g., ISO 11475, TAPPI T452) and product development workflows.
• Annular ring and disk assembly kit—compatible with optional glass sample cups—to enforce fixed optical path length (25 mL minimum volume) for transmission measurements of transparent or semi-transparent media, including coatings, beverages, and polymer solutions.

Sample Compatibility & Compliance

The Agera Accessory Kit extends the instrument’s applicability across ISO/ASTM-defined sample categories: solid opaque (e.g., painted panels, plastic pellets), translucent liquids (e.g., syrups, solvents), and semi-crystalline gels. All accessories maintain alignment with ISO 13655 (spectral measurement geometry), ISO 11664-4 (CIE colorimetric observers), and USP for pharmaceutical packaging color verification. The UV fluorescence standard supports compliance with FDA 21 CFR Part 11 requirements when used within HunterLab’s EasyMatch QC software, which provides full audit trail, electronic signature capability, and version-controlled calibration history.

Software & Data Management

Accessories integrate seamlessly with HunterLab EasyMatch QC v5.x and higher. Calibration files (e.g., reflectance spectra of white tile, UV standard) are imported directly into the software database, enabling automated correction algorithms for UV-adjusted tristimulus values (Y, x, y, L*a*b*, whiteness indices). The software enforces secure user roles, timestamped calibration events, and exportable PDF reports compliant with ISO/IEC 17025 documentation requirements. All accessory-related measurement protocols—including cup-based liquid analysis and annular-path transmission—are preconfigured as SOP templates with embedded tolerance limits and pass/fail logic.

Applications

This kit is routinely deployed in global R&D labs and QC facilities for: pigment formulation validation in automotive OEM supply chains; batch-to-batch consistency monitoring of UV-brightened detergents per AATCC Test Method 182; whiteness grading of medical-grade polypropylene films under ISO 2470-1; gloss-color correlation studies in architectural coatings per ASTM D2244; and transmission color analysis of ophthalmic lens solutions using fixed-path annular cuvettes. Its modular design ensures compatibility with HunterLab’s full Agera platform lifecycle—from initial factory calibration through multi-year operational maintenance.

FAQ

Are all calibration standards supplied with valid traceability certificates?
Yes—each white tile includes a NIST-traceable certificate of calibration; the black glass plate carries ASTM/ISO conformance documentation; and the UV fluorescent standard is accompanied by a Hohenstein Institute calibration report referencing DIN 5033-7 and CIE Publication 15:2018.
Can the annular ring/disk assembly be used with non-HunterLab sample cups?
No—the mechanical tolerances and optical alignment are optimized exclusively for HunterLab-certified glass sample cups (sold separately); third-party cups may introduce path-length deviation exceeding ±0.1 mm, compromising transmission accuracy.
Is the UV fluorescence standard required for routine color measurement?
It is mandatory only when measuring materials containing optical brightening agents (OBAs) or when reporting whiteness indices (e.g., CIE Whiteness, Ganz) under daylight-simulating conditions; omission will result in systematic bias in Y and b* values for OBA-containing samples.
How often should the white calibration tile be replaced?
HunterLab recommends replacement every 12 months under normal laboratory use or after 5,000 measurement cycles—whichever occurs first—as verified by quarterly verification against the included secondary reference tile.
Does the kit include firmware or software updates?
No—software updates and firmware patches are delivered separately via HunterLab’s secure customer portal and require active service contract coverage.