3nh YS6002 Desktop Spectrophotometer for Transmission and Reflectance Color Measurement

Overview

The 3nh YS6002 Desktop Spectrophotometer is a dual-mode benchtop instrument engineered for high-precision spectral measurement of both transmission and reflectance colorimetric properties. It operates on the fundamental principles of spectrophotometry—capturing full-spectrum radiance across 360–780 nm using a concave holographic grating and a 256-element CMOS linear array detector—and applies CIE-defined colorimetric computation to derive tristimulus values, chromaticity coordinates, and derived indices (e.g., yellowness, whiteness, Gardner, and Pt-Co). Its optical architecture conforms to CIE 15:2018 requirements for transmission geometry (D/0), while also supporting an optimized approximation of 0/0 geometry for parallel-beam transmission applications. The system employs a thermally stabilized, multi-LED broadband light source that replicates the spectral power distribution of CIE Standard Illuminant D65 with high fidelity, ensuring metrological consistency across long-term operation.

Key Features

• Dual-mode optical design enabling accurate measurement of transparent, translucent, and opaque samples under standardized geometries (d/8° for reflectance; D/0 and approximated 0/0 for transmission)
• 154 mm integrating sphere with dual-beam optical path for enhanced signal stability and reduced stray-light error
• High-fidelity 360–780 nm LED illumination system with spectral continuity and low thermal drift, eliminating mercury-vapor or xenon flash lamp aging effects
• Real-time environmental monitoring via integrated temperature sensor and dedicated reference photodiode, enabling automatic compensation for thermal and luminous flux drift
• 7-inch capacitive touchscreen interface with intuitive icon-driven workflow navigation, supporting multi-language UI (English, Chinese, Spanish, Portuguese)
• Onboard storage for up to 25,000 spectral data records, each including full 10-nm-interval reflectance/transmittance curves and computed colorimetric indices
• Support for both 2° and 10° CIE standard observer functions, with simultaneous calculation across multiple color spaces (CIELAB, CIELCH, CIEXYZ, RGB, Hunter Lab) and industry-specific metrics (ASTM E313 yellowness, ASTM E308 whiteness, ISO 6271 Gardner, ISO 6272 Pt-Co)

Sample Compatibility & Compliance

The YS6002 accommodates solid, liquid, and film-based specimens—including glass substrates, polymer sheets, pharmaceutical solutions, beverage samples, coated panels, and display filters—via configurable sample holders and optional liquid cuvette adapters. Its transmission measurement capability meets ASTM D1003 (haze), ASTM D1044 (transparency), ISO 11475 (optical properties of plastics), and ISO 11664 (colorimetry) requirements. Reflectance mode complies with ISO 7724, GB/T 3978–2008 (standard illuminants and observers), and GB/T 3979–2008 (color measurement methodology). All algorithms implement CIE 15:2018 spectral integration protocols and are traceable to NIM (National Institute of Metrology, China) calibration standards. The instrument supports GLP-compliant audit trails when used with PC software, including user authentication, parameter change logging, and raw spectral data immutability.

Software & Data Management

The included PC software (ColorExpert v4.x) provides comprehensive spectral analysis, batch comparison, tolerance setting (ΔE*ab, ΔL*a*b*, ΔE00), pass/fail reporting, and export to CSV, XML, or PDF formats. It supports FDA 21 CFR Part 11–compatible electronic signatures, role-based access control, and encrypted local database storage. Raw spectral files (.spc) retain full 361-point (10 nm step) reflectance/transmittance arrays, enabling third-party reprocessing per updated CIE or ASTM definitions. The software includes built-in templates for QC workflows in packaging, automotive paint, pharmaceutical excipient qualification, and display panel manufacturing—each preconfigured with relevant tolerances, illuminants, and observer settings.

Applications

• Quality assurance in flat-panel display manufacturing: backlight uniformity verification, filter color shift monitoring, and polarizer birefringence-induced hue deviation analysis
• Pharmaceutical liquid formulation: quantitative assessment of solution discoloration (e.g., oxidation-induced yellowing), batch-to-batch consistency of injectables and oral suspensions per USP
• Automotive and architectural glass processing: solar heat gain coefficient (SHGC)-correlated spectral transmittance profiling, low-e coating performance validation
• Plastic extrusion and injection molding: real-time color deviation tracking against masterbatch standards, haze/thickness correlation modeling
• Food & beverage R&D: objective quantification of juice clarity, wine browning index, and dairy product whiteness under multiple illuminants simulating retail lighting conditions
• Academic and metrology laboratories: spectral reflectance library development, inter-instrument agreement studies, and CIE color appearance model validation

FAQ

Does the YS6002 support ASTM D1003-compliant haze measurement?
Yes—it implements the full spectral integration method specified in ASTM D1003 Annex A1, calculating total, diffuse, and direct transmittance from raw 360–780 nm data to derive haze (%) with uncertainty < ±0.2% (k=2) for calibrated reference standards.
Can the instrument measure liquids in standard 10 mm pathlength cuvettes?
Yes—optional quartz or optical-grade acrylic cuvette holders (10 mm, 20 mm, 50 mm pathlengths) are available and fully integrated into the software’s transmission calibration routine.
Is spectral data export compatible with MATLAB or Python for custom analysis?
Yes—all .spc files are ASCII-encoded with header metadata and comma-delimited spectral intensity values, enabling direct ingestion into NumPy, Pandas, or MATLAB’s importdata() function without proprietary converters.
How often does the instrument require recalibration?
Factory calibration is valid for 12 months under normal lab conditions (23±5°C, 50±10% RH); daily user calibration using the included white ceramic tile is recommended before critical measurements, and the system logs all calibration events with timestamps and ΔE*ab residuals.
Does the software support multi-user environments with permission tiers?
Yes—ColorExpert supports three predefined roles (Operator, Supervisor, Administrator) with configurable permissions for method editing, report generation, calibration execution, and database backup/restore.