NDH 5000 Haze Meter
| Origin | Japan |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | NDH 5000 |
| Pricing | Upon Request |
Overview
The NDH 5000 Haze Meter is a precision optical measurement instrument engineered for high-reproducibility haze and transmittance characterization of flat, transparent, and semi-transparent materials. It operates on the principle of integrating sphere photometry with V(λ)-corrected silicon photodetectors, conforming rigorously to multiple international standards—including JIS K 7361, ISO 13468-1/2, JIS K 7136:2000, ISO 14768:1999, JIS K 7105, and ASTM D 1003—ensuring regulatory alignment for QC/QA laboratories in optics, polymer, display, and packaging industries. Its core architecture features a 150 mm diameter BaSO₄-coated integrating sphere with an active aperture door mechanism, enabling stable light diffusion and minimizing stray-light interference. The white LED light source (3 W, CIE Standard Illuminant A spectral profile) eliminates lamp aging drift and warm-up variability, delivering long-term photometric stability without recalibration or replacement over its operational lifetime.
Key Features
- Compliant dual-mode optical geometry: Compensated open-port integrating sphere configuration per JIS and ASTM haze definitions
- V(λ)-matched silicon photodiode detector with spectral responsivity traceable to NIST-calibrated reference standards
- Stable 14 mm collimated incident beam (25 mm input port) enabling repeatable measurement across heterogeneous sample surfaces
- Low-power operation: 10 W during measurement; 3 W standby mode via pulsed LED control—reducing thermal drift and energy consumption
- Large-sample compatibility: Sample chamber accommodates up to A4-sized specimens (210 × 297 mm); automatic aperture adjustment ensures full-field illumination without manual repositioning
- High-stability mechanical design: Rigid aluminum chassis, temperature-compensated electronics, and sealed optical path minimize environmental sensitivity
Sample Compatibility & Compliance
The NDH 5000 is validated for haze and transmittance analysis of rigid and flexible planar substrates including polycarbonate sheets, PET films, glass substrates, LCD cover lenses, diffuser plates, acrylic panels, and laminated touch modules. Its measurement protocol satisfies material qualification requirements under ISO 9001-certified quality systems and supports audit-ready documentation for GLP and GMP environments. All reported values—total transmittance (Tt), diffuse transmittance (Td), haze (%), parallel transmittance (Tp), and Turb value—are calculated per standardized algorithms defined in ASTM D 1003 Annex A1 (2022 edition) and ISO 13468-2:2021. Instrument performance verification includes daily system checks using certified reference standards (e.g., NIST-traceable haze standards SRM 2036 and SRM 2037), with documented reproducibility ≤ ±0.03% Tt (n = 20, 23 °C ambient, post-20-min stabilization).
Software & Data Management
The embedded firmware provides real-time display of up to eight parameters simultaneously—including Tt, haze, Td, Tp, Turb, user-defined memo fields, and timestamped test records—on a 126 × 64-dot fluorescent display (83.05 × 41.45 mm active area). Data storage supports up to 1,000 test results per file in non-volatile memory. Export is enabled via RS-232 serial interface (D-sub 9-pin male) or IEEE 1284 parallel port (D-sub 25-pin female), with CSV-formatted output compliant with comma-separated variable (CSV) conventions for seamless integration into LIMS, Excel, or statistical process control (SPC) platforms. Software functionality includes batch editing, metadata annotation, configurable averaging (1–99 readings), and GLP-compliant audit trail generation—including operator ID, calibration history, and environmental condition logging where interfaced with external sensors.
Applications
- Quality assurance of optical films in display manufacturing (OLED, LCD, touch panel laminates)
- Haze specification validation for medical device packaging (e.g., IV bags, syringe barrels, diagnostic cartridges)
- Process monitoring of extruded plastic sheets and injection-molded transparent components
- R&D evaluation of anti-glare coatings, nanostructured diffusers, and light-guide plates
- Regulatory submission support for FDA 21 CFR Part 11–compliant documentation workflows when paired with validated third-party data acquisition software
- Supplier qualification testing per automotive OEM specifications (e.g., GMW14872, Ford FLTM BN 108-01)
FAQ
Does the NDH 5000 require annual recalibration by an accredited lab?
Yes—while the LED source exhibits negligible spectral shift, annual verification against NIST-traceable haze standards is recommended to maintain ISO/IEC 17025 compliance.
Can the NDH 5000 measure curved or textured surfaces?
No—it is optimized for flat, optically homogeneous samples; curvature or surface roughness exceeding Ra < 0.1 µm may introduce measurement uncertainty beyond specified tolerances.
Is USB connectivity supported?
No—only RS-232 and IEEE 1284 parallel interfaces are provided; USB-to-serial adapters may be used with validated drivers.
What is the minimum measurable haze value?
The instrument achieves reliable detection down to 0.1% haze with standard deviation ≤ 0.02% under controlled laboratory conditions (23 ± 1 °C, RH 45 ± 5%).
Does the unit include factory calibration certificates?
Yes—each shipment includes a certificate of conformance listing serial-number-specific verification against JIS K 7361 and ASTM D 1003 protocols, signed by the authorized distributor’s metrology department.
