GBPI W401L – Compact Infrared Water Vapor Transmission Rate Tester
- Compact, benchtop infrared sensor water vapor transmission rate (WVTR) tester for laboratory R&D and QA screening
- Full testing compliance with ASTM F1249, ISO 15106-2, GB/T 26253, JIS K7129, and YBB 00092003
- Broad testing dynamic range from 0.01 to 200 g/(m²·24h) with resolution of 0.0001 g/(m²·24h)
- High-sensitivity infrared moisture analysis sensor with rapid equilibration and low baseline drift
- Internal automatic temperature control (15 °C ~ 45 °C ±0.2 °C) and humidity generation ((5 ~ 90)% RH ±2% RH, 100% RH)
- Standard Φ100 mm specimen holder with 50.24 cm² effective permeation area (specimen thickness ≤ 3 mm)
- Specialized PC analytical software providing real-time permeation curves, single-point / multi-point calibration, and automatic PDF reporting
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The GBPI W401L is an advanced, compact infrared water vapor transmission rate tester designed for precise moisture permeability evaluation of plastic barrier films, laminated flexible packaging, sheets, coated papers, and pharmaceutical foils. Built in full conformance with standardized infrared photometric detection standards including ASTM F1249, ISO 15106-2, GB/T 26253, JIS K7129, and pharmaceutical YBB 00092003 guidelines, this space-saving instrument delivers rapid, highly sensitive moisture barrier verification for quality control and research facilities.
Accurate moisture barrier assessment is crucial to protecting food flavors, pharmaceutical potency, and sensitive electronics from moisture degradation. The GBPI W401L infrared water vapor transmission rate tester operates on the modulated infrared sensor principle: a prepared test specimen is positioned inside the sealed test chamber, dividing it into a high-humidity vapor chamber and an opposing dry nitrogen carrier gas chamber. Driven by the water vapor concentration gradient across the barrier membrane, moisture molecules diffuse into the carrier gas stream, which continuously sweeps them past an optical infrared absorption sensor. The absorption of specific infrared wavelength bands produces an electrical output directly calibrated to the water vapor transmission rate.
Compact Benchtop Architecture & High Sensitivity
Engineered for laboratories that require rapid sample testing without excessive bench footprint, the GBPI W401L integrates high-efficiency thermal regulation and sensor electronics inside a streamlined 440 × 680 × 380 mm housing. Its upgraded infrared detector provides an ultra-fine resolution of 0.0001 g/(m²·24h), allowing laboratories to characterize everything from high-barrier metallized films to standard packaging polyolefins.
Precise Thermodynamic Environment Regulation
The W401L features an integrated constant-temperature jacket maintaining test temperatures between 15 °C and 45 °C with ±0.2 °C stability, alongside dynamic dual-gas humidity generation spanning 5% to 90% RH (±2% RH) as well as 100% RH saturation. Automated carrier gas flow regulation ensures uniform laminar velocity across the test specimen surface.
The accompanying PC software interface provides full automated control, real-time transmission rate vs. time curves, certified standard reference film calibration routines, and password-protected data management compliant with modern laboratory quality systems.
GBPI W401L Compact Infrared WVTR Tester – Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Test Principle | Infrared Sensor Method (Photometric absorption detection) |
| Applicable Standards | ASTM F1249, ISO 15106-2, GB/T 26253, JIS K7129, YBB 00092003 |
| Testing Range | 0.01 ~ 200 g/(m²·24h) |
| Measurement Resolution | 0.0001 g/(m²·24h) |
| Number of Test Chambers | 1 high-precision test chamber (focused single-specimen analysis) |
| Temperature Control Range & Precision | 15 °C ~ 45 °C (±0.2 °C accuracy) |
| Humidity Control Range & Precision | (5 ~ 90)% RH, 100% RH (±2% RH accuracy) |
| Effective Transmission Area | 50.24 cm² |
| Specimen Dimensions & Thickness | Φ100 mm diameter; Thickness ≤ 3 mm |
| Carrier Gas Requirement | ≥ 99.999% High-Purity Dry Nitrogen (N&sub2;) |
| Carrier Gas Pressure & Flow | Pressure ≥ 0.1 MPa; Flow rate 5 ~ 100 mL/min |
| Dimensions & Net Weight | 440 mm × 680 mm × 380 mm; 35 kg |
| Power Supply & Consumption | AC 220 V ±10%, 50 Hz / 60 Hz; Rated Power: 450 W |
Key Features & Engineering Innovations
- High-Resolution Infrared Optical Sensor: High-stability infrared detector providing 0.0001 g/(m²·24h) resolution and rapid moisture response across high and medium barrier films.
- Compact Laboratory Footprint: Ergonomic benchtop profile (35 kg net weight) ideal for space-constrained testing benches and focused R&D workstations.
- Integrated Thermodynamic Control: Internal heating/cooling blocks deliver 15 °C to 45 °C stability with dual gas mixing for 5% to 100% RH humidity generation.
- Certified Standard Film Calibration: Supports single-point and multi-point calibration verification using traceable standard polyester reference films.
- Automated PC Software Analytics: Automated test equilibrium determination, curve plotting, data archiving, and standardized PDF report output.
Standard Scope of Delivery
| Item | Description | Quantity |
|---|---|---|
| 1 | GBPI W401L Compact Infrared WVTR Analyzer Unit | 1 Unit |
| 2 | GBPI Professional WVTR Acquisition and Analysis Software | 1 License |
| 3 | Traceable Certified Reference Calibration Film | 1 Pkg (2 pcs) |
| 4 | Circular Specimen Punch Template (Φ100 mm) & Sealing Grease | 1 Set |
| 5 | Nitrogen Carrier Gas Tube, Power Cable, and Operating Manual | 1 Set |
Test Standards Compliance
- ASTM F1249: Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor
- ISO 15106-2: Plastics — Film and sheeting — Determination of water vapour transmission rate — Part 2: Infrared detection sensor method
- GB/T 26253: Determination of water vapor transmission rate for plastics — Infrared detection sensor method
- JIS K7129: Japanese Industrial Standard for water vapor transmission rate of plastic films
- YBB 00092003: National standard for water vapor transmission of pharmaceutical packaging films
Target Materials
- Flexible Packaging Films: Mono-layer and multi-layer plastic barrier films (PE, PP, PET, PA, EVOH).
- Laminated Packaging: Aluminum-plastic composite foils and barrier pouches.
- Pharmaceutical Packaging: PTP blister foils, pharmaceutical sachets, and barrier membranes.