Rhopoint Novo-Shade Duo+ Reflectance and Hiding Power Meter
| Brand | Rhopoint |
|---|---|
| Origin | United Kingdom |
| Model | Novo-Shade Duo+ |
| Reflectance Repeatability | 0.2% |
| Reflectance Accuracy | ±0.1 |
| Measurement Geometry | 0°/45° |
| Display | Full-color LCD with adjustable brightness |
| Interface | 6 capacitive touch keys |
| Construction | Anodized aluminum housing, tempered glass front panel, integrated calibration stand with position detection |
| Data Storage | 8 MB (up to 999 readings), user-definable batch names |
| Connectivity | Bluetooth 4.2, USB Type-A (driver-free PC connection) |
| Battery | Rechargeable Li-ion, ≥17 hours continuous operation, ≥20,000 measurements per charge, 4-hour full recharge |
| Operating Environment | 15–40 °C, ≤85% RH non-condensing |
| Dimensions | 65 mm (H) × 140 mm (L) × 50 mm (W) |
| Weight | 790 g |
| Compliance | ISO 2814, ISO 6504, BS 3900-D4 & D7, ASTM E97, E1347, D4214, D2805, D589 |
Overview
The Rhopoint Novo-Shade Duo+ Reflectance and Hiding Power Meter is a portable, precision optical instrument engineered for quantitative assessment of surface reflectance, coating hiding power (opacity), and substrate cleanliness in industrial quality control and R&D environments. It operates on the standardized 0°/45° illumination/viewing geometry—compliant with ISO 2814, ASTM E97, and BS 3900-D4—ensuring metrological traceability and inter-laboratory comparability. Unlike integrating sphere-based spectrophotometers, the Novo-Shade Duo+ employs a fixed-angle reflective photometric design optimized for rapid, repeatable measurement of diffuse and directional reflectance from flat or slightly curved opaque and semi-opaque substrates. Its dual-function architecture enables simultaneous evaluation of both spectral reflectance (as a percentage relative to a calibrated white standard) and hiding power (via contrast ratio calculation between black and white substrates), making it indispensable for formulation validation, batch release testing, and process stability monitoring across coatings, printing inks, paper, and plastic film manufacturing.
Key Features
- Triple-mode measurement capability: Reflectance (%R), Hiding Power (Contrast Ratio), and Surface Cleanliness Index (SCI)—all derived from a single 0°/45° optical path without mechanical reconfiguration.
- High-stability anodized aluminum chassis with integrated calibration stand featuring automatic position detection—eliminating operator-induced alignment error and enabling one-touch zero and reference calibration.
- Full-color, sunlight-readable LCD with adjustable backlight intensity and intuitive 6-key capacitive touch interface—designed for glove-compatible operation in production-floor conditions.
- Onboard statistical engine delivering real-time calculation of min/max, mean, standard deviation, and coefficient of variation (CV%) for up to 999 stored readings per batch.
- Trend analysis visualization with time-stamped graphical plots—enabling longitudinal tracking of coating aging (e.g., chalking, yellowing) or cleaning efficacy over repeated exposure cycles.
- Robust environmental rating: operational reliability maintained across 15–40 °C and up to 85% relative humidity (non-condensing), validated per IEC 60529 IP54-equivalent ingress protection.
Sample Compatibility & Compliance
The Novo-Shade Duo+ is validated for use with rigid and flexible planar samples including painted metal panels, coated paperboard, laminated films, and cured polymer sheets. Its 0°/45° geometry inherently rejects specular reflection, ensuring accurate measurement of diffuse reflectance from matte, satin, and semi-gloss finishes without requiring gloss compensation algorithms. All factory calibrations are traceable to NPL (National Physical Laboratory, UK)-certified standards, and device performance conforms to ISO/IEC 17025-aligned verification protocols. Regulatory compliance includes adherence to ASTM D2805 (hiding power of paints), ASTM D589 (paper opacity), ISO 6504 (paint reflectance), and BS 3900-D7 (contrast ratio determination). For GLP/GMP-regulated environments, audit-ready data export supports 21 CFR Part 11-compliant electronic records when paired with Rhopoint’s certified PC software suite.
Software & Data Management
- Bluetooth 4.2 and driver-free USB connectivity enable seamless transfer of raw and processed datasets to Windows/macOS platforms.
- Embedded 8 MB flash memory stores up to 999 readings with customizable batch identifiers, timestamps, and operator codes—supporting full traceability without external logging.
- Free PC application provides CSV/Excel export, batch comparison overlays, SPC chart generation (X̄-R, Cpk), and automated report templating compliant with internal QA documentation requirements.
- Mobile companion app (iOS/Android) delivers real-time remote viewing, cloud-synced calibration history, and firmware update notifications—maintaining instrument readiness across distributed facilities.
- All data files include embedded metadata: instrument serial number, calibration date, measurement mode, ambient temperature/humidity, and operator ID—satisfying ISO 17025 clause 7.7.1 record retention mandates.
Applications
The Novo-Shade Duo+ serves as a primary metrology tool across multiple verticals: In architectural and industrial coatings, it quantifies hiding power during pigment dispersion optimization and verifies batch-to-batch consistency against specification limits (e.g., ≥98% contrast ratio for titanium dioxide-rich primers). For packaging converters, it measures paperboard whiteness (ISO 2470) and ink opacity on recycled substrates—critical for brand color fidelity and regulatory compliance (e.g., EU Directive 2002/72/EC). In automotive refinishing, it tracks paint chalking degradation (ASTM D4214) by monitoring reflectance loss over UV exposure cycles. Additionally, it validates cleaning protocol efficacy in pharmaceutical cleanrooms (ISO 14644-1) by detecting residual organic film via reflectance delta (ΔR) on stainless steel surfaces, and assesses anti-fog additive performance in medical-grade PET films through transparency index trending.
FAQ
What standards does the Novo-Shade Duo+ comply with for reflectance measurement?
It meets ISO 2814, ISO 6504, BS 3900-D4, ASTM E97, and ASTM E1347 for reflectance; and ASTM D2805, ASTM D589, and BS 3900-D7 for hiding power and opacity.
Can the instrument measure curved or textured surfaces?
It is optimized for flat or gently curved surfaces (radius >100 mm); highly textured or deeply recessed geometries may require supplementary contact masking to ensure consistent aperture coverage.
Is the calibration certificate NIST-traceable?
Calibration is traceable to NPL (UK National Physical Laboratory) standards; NIST-traceable certification is available upon request with additional accreditation documentation.
How is measurement repeatability verified during routine use?
Built-in reference tile verification—performed automatically at startup and manually at any time—confirms optical path stability and detector linearity within ±0.2% reflectance repeatability tolerance.
Does the device support multi-language UI or custom parameter units?
The interface is English-only; all measurement units (%, contrast ratio, ΔR) are fixed per ISO/ASTM conventions and not user-configurable to maintain regulatory compliance integrity.
