GBPI SGW-810 – Light Transmittance and Haze Tester (Integrating Sphere)
- Precision optical light transmittance and haze tester for transparent and translucent plastic films, sheets, and glass
- Full testing compliance with ASTM D1003, ISO 14782, JIS K7105, and GB/T 2410
- Simultaneous quantification of Total Luminous Transmittance (Tt) from 0% to 100.0% and Optical Haze (H) from 0% to 30.0%
- Ultra-high digital display resolution of 0.01% for both transmittance and haze parameters
- Standard integrating sphere optical geometry conforming to CIE standard illuminants and spectral luminous efficiency V(λ)
- Open sample compartment accommodating thin films, rigid plastic sheets, fluid cuvettes, and glass panels
- Color touchscreen interface with automated zero and 100% calibration, statistical averaging, and integrated report printer
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The GBPI SGW-810 is an industry-standard, high-precision laboratory light transmittance and haze tester engineered to determine the total luminous transmittance, optical wide-angle scattering haze, and optical clarity of transparent and translucent plastic films, composite packaging laminates, rigid acrylic panels, polycarbonate sheets, optical glass, and liquid solutions. Built in strict conformity with premier optical testing standards including ASTM D1003 (standard test method for haze and luminous transmittance of transparent plastics), ISO 14782, JIS K7105, and GB/T 2410, this instrument delivers certified optical quality evaluation.
Optical properties are paramount in flexible food packaging, agricultural greenhouse mulches, and consumer electronic display panels. In retail food packaging, consumers demand crystal-clear display of packaged meats and produce, where excessive milky haze or internal forward scattering diminishes perceived freshness. Conversely, in greenhouse agricultural films, elevated forward haze diffuses direct sunlight evenly across plant canopies, preventing sun-scorch while maintaining high total luminous energy transmission. Operating as an integrating sphere light transmittance and haze tester, the GBPI SGW-810 projects a collimated beam of light through the specimen into an integrating sphere coated with high-reflectance barium sulfate, collecting both parallel direct transmitted light and wide-angle scattered light (deflected by greater than 2.5 degrees).
Integrating Sphere Geometry & 0.01% Resolution
The instrument incorporates a precision integrating sphere paired with a silicon photodiode detector corrected to the human eye spectral luminous efficiency curve V(λ). The system delivers a digital measurement resolution of 0.01% with transmittance accuracy within ≤1% and haze accuracy within ±0.1% for low-haze specimens.
Versatile Open Measurement Chamber
The open-path specimen compartment accommodates both small coupons and large film sheets without specimen destruction. An integrated spring-loaded specimen clamp holds samples perfectly flat against the entrance port of the integrating sphere, eliminating optical path refraction artifacts.
Equipped with an intuitive touchscreen controller, automated baseline calibration, and an onboard micro-printer, the SGW-810 provides plastic converters, film extruders, and optical testing laboratories with dependable optical clarity analytics.
GBPI SGW-810 Light Transmittance & Haze Tester – Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Test Principle | Integrating Sphere Photoelectric Optical Collimation (ASTM D1003 Method A) |
| Applicable Standards | ASTM D1003-2007, JIS K7105-81, ISO 14782, GB/T 2410, ISO 13468 |
| Total Luminous Transmittance Range | 0% ~ 100.0% (Total Transmittance Tt) |
| Optical Haze Degree Range | 0% ~ 30.0% (Wide-Angle Forward Scattering Haze H) |
| Display Resolution | 0.01% for Transmittance and 0.01% for Haze |
| Transmittance Accuracy & Repeatability | Accuracy: ≤ 1.0%; Repeatability: ≤ 0.5% |
| Haze Accuracy | Haze ≤ 0.5%: ≤ ±0.1%; Haze > 0.5%: ≤ ±0.3% |
| Haze Repeatability | Haze ≤ 0.5%: ≤ 0.05%; Haze > 0.5%: ≤ 0.10% |
| Optical Light Source | CIE Standard Illuminant C / A (Long-life halogen / LED array) |
| Specimen Test Chamber Dimensions | Open-architecture stage (Accommodates standard 50×50 mm up to large sheets) |
| Overall Dimensions & Weight | 540 mm (L) × 360 mm (W) × 280 mm (H); Weight: 21 kg |
| Working Power Supply | AC 220 V ±10%, 50 Hz / 60 Hz; Total Power: 80 W |
Key Features & Engineering Highlights
- Compliance with ASTM D1003 & ISO 14782: International standard reference method for optical haze and light transmittance testing.
- Dual Simultaneous Optical Analysis: Instantaneously calculates both Total Transmittance (Tt) and Haze percentage (H) in one button press.
- Precision Integrating Sphere: Features a high-diffusivity internal barium sulfate coating and light trap conforming to CIE geometry.
- High Digital Resolution: Displays transmittance and haze down to 0.01% with outstanding baseline stability.
- Automatic Zero & 100% Calibration: Pushbutton electronic calibration standardizes dark current and air blank reference before testing.
- Open Sample Stage Architecture: Effortlessly mounts thin packaging films, thick acrylic panels, optical lenses, and liquid cuvettes.
- Built-In Micro Thermal Printer: Instant generation of certified optical test reports including date, specimen number, transmittance, and haze.
Standard Package & Accessories
| Item Description | Quantity |
|---|---|
| GBPI SGW-810 Light Transmittance & Haze Tester Mainframe | 1 Unit |
| Certified Standard Haze Calibration Film Standard Pieces | 1 Set (3 Pcs) |
| Precision Spring-Loaded Film Clamping Fixture | 1 Pc |
| Integrated Micro Thermal Printer & Paper Roll | 1 Set |
| Power Supply Cable & Ground Lead | 1 Set |
| Operating Manual & Factory Calibration Certificate | 1 Set |
Target Industry Applications
Food & Consumer Packaging
Evaluating transparency and haze of BOPP, PET, and multi-layer barrier laminates used for meat packaging, fresh produce, and clear pouches.
Agricultural Greenhouse Films
Optimizing light diffusion and total solar transmittance in EVA and polyethylene agricultural greenhouse plastic coverings.
Optoelectronic Displays & Touchscreens
Testing optical grade PMMA, polycarbonate, anti-glare screen protector films, and smartphone cover glasses under ASTM D1003.
Liquid & Beverage Characterization
Using liquid cuvettes to measure turbidity, clarity, and suspended solids haze in fruit juices, cooking oils, and chemical reagents.