3nh NR4510 Portable Reflectance & Hiding Power Colorimeter

Overview

The 3nh NR4510 Portable Reflectance & Hiding Power Colorimeter is a precision optical measurement instrument engineered for rapid, field-deployable assessment of reflectance and hiding power in coatings, pigments, inks, and colored substrates. It operates on the 45/0° optical geometry—defined by CIE Publication No. 15 and aligned with ISO/CIE standards for diffuse reflectance measurement—where light is incident at 45° from the normal and collected perpendicularly (0°), minimizing directional bias and specular influence. This configuration ensures high reproducibility for matte to semi-gloss surfaces commonly encountered in architectural paints, automotive refinishes, textile dyes, and industrial colorants. The NR4510 integrates a stable D65-simulating LED illuminant with a spectral response matched to the CIE 1964 10° standard observer, enabling accurate calculation of reflectance (R%), contrast ratio (hiding power), and chromatic deviation (ΔR) across the visible spectrum (400–700 nm). Designed for compliance-driven environments, it conforms to ISO 3906:1980(E), GB/T 13452.3–1992, GB/T 23981–2009, GB 9270–1988, and GB 5211.17–1988—key specifications referenced in QC protocols for paint formulation, pigment dispersion validation, and substrate coverage certification.

Key Features

• Calibration-free operation via intelligent onboard storage of reference white calibration values—eliminates repeated manual recalibration during extended field use.
• Dedicated national-standard white calibration tile traceable to Chinese metrological standards, ensuring long-term measurement stability and inter-laboratory comparability.
• Ergonomic one-hand design with aperture-first alignment; no buttons required for basic reflectance capture—measurement initiates automatically upon contact with sample surface.
• High-efficiency LED illumination system rated for ≥1.6 million measurements (>5 years under typical usage), delivering consistent spectral output without thermal drift or lamp aging artifacts.
• Integrated 2.8″ TFT true-color display (16:9 aspect ratio) with intuitive icon-based UI optimized for glove-compatible operation in production or warehouse settings.
• Rechargeable lithium-ion battery (3.7 V / 3200 mAh) supports continuous operation for up to 12 hours per charge—ideal for multi-site audits or mobile QA/QC workflows.

Sample Compatibility & Compliance

The NR4510 accommodates flat, rigid, or slightly curved opaque and semi-opaque samples including liquid colorants (on standardized black/white tiles), dried paint films, ceramic glazes, textile swatches, and plastic laminates. Its Φ20 mm standard aperture provides representative averaging over heterogeneous surfaces; optional Φ10 mm aperture enables targeted evaluation of fine-grain textures or small-area batches. All measurements comply with regulatory frameworks governing coating performance verification—including ASTM D2805 (hiding power of white and light-colored paints), ISO 6504-2 (pigment dispersion quality), and GB/T 9756–2018 (interior wall paint specifications). While the device itself does not include FDA 21 CFR Part 11-compliant audit trails, its raw reflectance and contrast ratio outputs are suitable for inclusion in GLP/GMP documentation when paired with controlled SOPs and operator training records.

Software & Data Management

The NR4510 stores up to 100 reference standards and 5,000 test records internally, each tagged with timestamp, instrument ID, and pass/fail status based on user-defined ΔR thresholds. Data export is supported via USB interface to PC-based reporting tools (no proprietary software included). Users may integrate measurement logs into LIMS or ERP systems using CSV-formatted exports containing R_white, R_black, contrast ratio (R_black/R_white), and deviation from master standard. Firmware updates are delivered via downloadable HEX files and applied through the device’s bootloader mode—ensuring traceable version control and regulatory readiness.

Applications

• Quantitative hiding power evaluation of architectural and industrial coatings per ISO 3906 and GB/T 13452.3.
• In-process verification of pigment dispersion uniformity in ink and paint manufacturing lines.
• Batch-to-batch consistency checks for dye lots in textile printing and finishing facilities.
• Quality gate inspection of incoming raw materials—e.g., titanium dioxide, calcium carbonate, and organic pigments—against reflectance benchmarks.
• Field validation of touch-up paint matches on automotive OEM repair sites and construction projects.
• R&D screening of novel opacifiers, effect pigments, and nanostructured additives impacting near-surface light scattering.

FAQ

What standards does the NR4510 comply with for hiding power measurement?

It meets ISO 3906:1980(E), GB/T 13452.3–1992, and GB/T 23981–2009—covering contrast ratio determination for liquid and film-forming coatings.
Can the NR4510 measure transparent or translucent films?

No—it is designed exclusively for opaque and semi-opaque samples mounted on standardized black-and-white contrast tiles; transmission-based metrics require a spectrophotometer with integrating sphere geometry.
Is the Φ10 mm aperture available as a factory option or field retrofit?

The Φ10 mm aperture is offered as a factory-installed configuration only; mechanical aperture swaps are not supported post-delivery due to optical alignment requirements.
How is instrument-to-instrument agreement verified?

Inter-unit variance is validated using BCRA Series II 12-tile set; maximum allowable ΔR deviation is ≤0.5 under identical environmental and operational conditions.
Does the device support user-defined illuminants beyond D65?

No—the NR4510 uses fixed D65 LED illumination optimized for daylight-corrected reflectance; spectral reweighting or alternate illuminant simulation is not implemented.